64 (sixty-four) is the natural number following 63 and preceding 65. In mathematics, a natural number is either a positive integer (1, 2, 3, 4, ...) or a non-negative integer (0, 1, 2, 3, 4, ...). The former definition is generally used in number theory, while the latter is preferred in set theory and computer science. ... Sixty-three is a natural number following 62 and preceding 64. ... 65 is the natural number following 64 and preceding 66. ...

<< 60 61 62 63 64 65 66 67 68 69 >> 59 (fifty-nine) is the natural number following 58 and preceding 60. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 61 (sixty-one) is the natural number following 60 and preceding 62. ... 62 (sixty-two) is a natural number following 61 and preceding 63. ... Sixty-three is a natural number following 62 and preceding 64. ... 65 is the natural number following 64 and preceding 66. ... 66 is the natural number following 65 and preceding 67. ... 67 is the natural number following 66 and preceding 68. ... 68 (sixty-eight) is the natural number following 67 and preceding 69 In mathematics Sixty-eight is a nontotient. ... 69 (sixty-nine) is the natural number following 68 and preceding 70. ... 70 (seventy) is the natural number following 69 and preceding 71. ... List of numbers -- Integers This is a list of articles about numbers (not about numerals). ... The integers consist of the positive natural numbers (1, 2, 3, …), their negatives (−1, −2, −3, ...) and the number zero. ... 0 10 20 30 40 50 60 70 80 90 >> 0 (zero) is both a number and a numeral. ... 10 (ten) is an even natural number following 9 and preceding 11. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 70 (seventy) is the natural number following 69 and preceding 71. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ...
Cardinal	64 sixty-four
Ordinal	64th sixty-fourth
Numeral system
Factorization
Divisors	2, 4, 8, 16, 32
Roman numeral	LXIV
Binary	1000000
Hexadecimal	40

In linguistics, cardinal numbers is the name given to number words that are used for quantity (one, two, three), as opposed to ordinal numbers, words that are used for order (first, second, third). ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... A numeral is a symbol or group of symbols that represents a number. ... In mathematics, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system (base 2 numerals) represents numeric values using two symbols, typically 0 and 1. ... In mathematics and computer science, base-16, hexadecimal, or simply hex, is a numeral system with a radix or base of 16 usually written using the symbols 0–9 and A–F or a–f. ...

In mathematics

Sixty-four is the square of 8, the cube of 4, and the sixth power of 2. It is the smallest number with exactly seven divisors. It is the lowest positive power of two that is adjacent to neither a Mersenne prime nor a Fermat prime. 64 is the sum of Euler's totient function for the first fourteen integers. It is also a dodecagonal number and a centered triangular number. 8 (eight) is the natural number following 7 and preceding 9. ... 4 (four) is a number, numeral, and glyph. ... 2 (two) is a number, numeral, and glyph. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... In mathematics, a power of two is any of the nonnegative integer powers of the number two; in other words, two times itself a certain number of times. ... In mathematics, a Mersenne prime is a prime number that is one less than a prime power of two. ... In mathematics, a Fermat number, named after Pierre de Fermat who first studied them, is a positive integer of the form where n is a nonnegative integer. ... The first thousand values of φ(n) In number theory, the totient (n) of a positive integer n is defined to be the number of positive integers less than or equal to n and coprime to n. ... A dodecagonal number is a figurate number that represents a dodecagon. ... A centered triangular number is a centered figurate number that represents a triangle with a dot in the center and all other dots surrounding the center in successive triangular layers. ...

In base 10, no integer added up to its own digits yields 64, hence it is a self number. A self number or Colombian number is an integer which, in a given base, can not be generated by any other integer added to the sum of its digits. ...

In science

• The atomic number of gadolinium, a lanthanide

In chemistry and physics, the atomic number (Z) is the number of protons found in the nucleus of an atom. ... General Name, Symbol, Number gadolinium, Gd, 64 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 157. ...

Astronomy

• Messier object M64, a magnitude 9.0 galaxy in the constellation Coma Berenices, also known as the Black Eye Galaxy.

• The New General Catalogue object NGC 64, a barred spiral galaxy in the constellation Cetus

• The Saros number of the solar eclipse series which began on -832 April 11 and ended on 430 May 8. The duration of Saros series 64 was 1262.1 years, and it contained 71 solar eclipses.

• The Saros number of the lunar eclipse series which began on -801 August 9 and ended on 714 February 4. The duration of Saros series 64 was 1514.5 years, and it contained 85 lunar eclipses.

Table of all 110 Messier objects. ... Messier Object 64, the Black Eye Galaxy. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light years in diameter and approximately 60 million light years distant. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Coma Berenices (Latin for Berenices Hair) is a traditional asterism that has since become a constellation. ... Messier Object 64, the Black Eye Galaxy. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... NGC 1300, viewed nearly face-on. ... Cetus (a name from Greek mythology, referring to a Whale or Sea monster, see Ceto) is a constellation of the southern sky, in the region known as the Water, near other watery constellations like Aquarius, Pisces, and Eridanus. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... April 11 is the 101st day of the year in the Gregorian calendar (102nd in leap years). ... Events Saint Patrick reaches Ireland on his missionary expedition. ... May 8 is the 128th day of the year in the Gregorian Calendar (129th in leap years). ... An eclipse refers to the phenomenon of one body passing into the shadow cast by another body. ... August 9 is the 221st day of the year in the Gregorian Calendar (222nd in leap years), with 144 days remaining. ... // Events February 28 - An earthquake strikes Syria. ... February 4 is the 35th day of the year in the Gregorian Calendar. ...

In other fields

Sixty-four is:

• In some computer programming languages, the size in bits of certain data types
• In chess or draughts, the total number of black (dark) and white (light) squares on the game board
• "64" is the name of the premier Russian chess magazine
• The code for international direct dial calls to New Zealand
• The designation of US Interstate 64, a freeway from Missouri to Virginia
• The subject of the Beatles song "When I'm Sixty-Four"
• The registry of the U.S. Navy's aircraft carrier USS Constellation (CV-64)
• The number of Braille characters in the old 6-dot system
• In 8-bit home computers, a common shorthand for the Commodore 64
• In video games, the Nintendo 64 video game console and the Commodore 64. Since 1996, the number 64 has been an abbreviation or slang for Nintendo 64 (though N64 is more common)
• The maximum number of strokes in any Chinese character
• Number of hexagrams in I Ching
• Number of sexual positions in the Kama Sutra
• Slang term referring to a 1964 Chevy Impala, often configured as a lowrider, a popular subject among early-90's gangsta rap and today very popular in the Dirty South H Town rap by rappers Paul Wall, Mike Jones, etc.
• The number of classical arts listed in many Indian scriptures. They include: singing, dancing, painting, poetry, playing cards, making arguments, making flower garlands, etc.
• The number of the French department Pyrénées-Atlantiques
• The amount of crayons in the popular Crayola 64 pack

Chess is an abstract strategy board game for two players. ... Checkers or draughts (drafts or /dɹɑfʦ/ (UK)), is a group of abstract strategy board games between two players which involve diagonal moves of uniform pieces and mandatory captures by jumping over the enemys pieces. ... A collection of magazines A magazine is a periodical publication containing a variety of articles, generally financed by advertising and/or purchase by readers. ... This is a list of country calling codes, also known as international direct dialing (IDD) codes, which are needed to access international telephone services. ... Motto: (traditional) In God We Trust (official, 1956–present) Anthem: The Star-Spangled Banner Capital Washington, D.C. Largest city New York City Official language(s) None at the federal level; English de facto Government Federal Republic  - President George W. Bush (R)  - Vice President Dick Cheney (R) Independence - Declared - Recognized... Interstate 64 (abbreviated I-64) is an Interstate Highway in the eastern United States. ... Official language(s) None Capital Jefferson City Largest city Kansas City Largest metro area St. ... Official language(s) English Capital Richmond Largest city Virginia Beach Area  Ranked 35th  - Total 42,793 sq mi (110,862 km²)  - Width 200 miles (320 km)  - Length 430 miles (690 km)  - % water 7. ... The Beatles were an English Rock n Roll group from Liverpool, who continue to be held in the very highest regard for their artistic achievements, their huge commercial success, and their ground-breaking role in the history of popular music. ... When Im Sixty-Four is a popular love song by The Beatles, written by Paul McCartney (but co-credited to John Lennon) and released in 1967 on their album Sgt. ... USS Constellation (CV-64), a Kitty Hawk-class supercarrier, was the third ship of the United States Navy to be named in honor of the new constellation of stars on the flag of the United States. ... PREMIER - first The information about the historic site of Safdarjung’s tomb in Delhi, India. ... 8-bit refers to the number of bits used in the data bus of a computer. ... TRS-80 Color Computer II The home computer is a consumer-friendly word for the second generation of microcomputers (the technical term that was previously used), entering the market in 1977 and becoming common during the 1980s. ... For the hip hop group, see Commodore 64 (band). ... This article is about computer and video games. ... The Nintendo 64, commonly called the N64, is Nintendos third home video game console for the international market. ... A video game console is a dedicated electronic machine designed to play video games. ... For the hip hop group, see Commodore 64 (band). ... Stroke order refers to the way of writing Chinese characters. ... 漢字 Chinese character in hànzì, hanja, kanji. ... Alternative meaning: I Ching (monk) The I Ching (Traditional Chinese: 易經, pinyin y jīng; Cantonese IPA: jɪk6gɪŋ1; Cantonese Jyutping: jik6ging1; alternative romanizations include I Jing, Yi Ching, Yi King) is the oldest of the Chinese classic texts. ... Modern translated version of the original Sanskrit. ... A lowrider is a car or truck which has had its suspension system modified (usually with hydraulic suspension) so that it rides as low to the ground as possible. ... Gangsta rap is a subgenre of hip hop music which involves a lyrical focus on the lifestyles of inner-city gang members and criminals. ... Paul Wall (born Paul Slayton on March 30, 1980) is an American rapper, DJ, promoter and jeweler from Houston, Texas. ... Album cover of Who is Mike Jones? (Screwed & Chopped) For other people with the name of Michael Jones or Mike Jones, see Michael Jones. ... The départements (or departments) are administrative units of France, roughly analogous to British counties and are now grouped into 22 metropolitan and four overseas régions. ... Pyrénées-Atlantiques (Gascon: Pirenèus-Atlantics; Basque: Pirinio-Atlantiarrak or Pirinio-Atlantikoak) is a département in the southwest of France which takes its name from the Pyrenees mountains and the Atlantic Ocean. ... Crayola color names. ...

Historical years

64 A.D., 64 B.C., 1964, 2064, etc. Centuries: 1st century BC - 1st century - 2nd century Decades: 10s 20s 30s 40s 50s - 60s - 70s 80s 90s 100s 110s Years: 59 60 61 62 63 - 64 - 65 66 67 68 69 Events In Rome, persecution of early Christians begins under Roman Emperor Nero. ... Centuries: 2nd century BC - 1st century BC - 1st century Decades: 110s BC 100s BC 90s BC 80s BC 70s BC - 60s BC - 50s BC 40s BC 30s BC 20s BC 10s BC Years: 69 BC 68 BC 67 BC 66 BC 65 BC 64 BC 63 BC 62 BC 61... 1964 (MCMLXIV) was a leap year starting on Wednesday (the link is to a full 1964 calendar). ... (Redirected from 2064) Millennia: 2nd millennium - 3rd millennium - 4th millennium Centuries: 20th century - 21st century - 22nd century Decades: 2010s 2020s 2030s 2040s 2050s - 2060s - 2070s 2080s 2090s Years: 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 The Decade as a Whole This decade is expected to be called...