64 (number) 64 (number) 64 (sixty-four) is the natural number following 63 and preceding 65. 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. 64 is also the first whole number that is both a perfect square and a perfect cube. Since
One Song to the Tune of Another Boy" and vice versa). Also in recent popular culture bootlegging and bastard pop have taken is a step further, employing the practice of laying down vocals from one track over the music from another. Both "The Star Spangled Banner" and "My Country, 'Tis of Thee" are both examples of taking a song and writing new lyrics for the tune. One Song to the Tune of Another "One Song to the Tune of Another" was the first game played on the BBC Radio 4 comedy panel game "I'm Sorry I Haven't a Clue" and is still almost always played every other