64 is a positive integer between 63 and 65.
Properties[]
64 is the square of 8, the cube of 4, and the sixth power of two.
It is the smallest power of two that is adjacent to neither a mersenne prime or a fermat prime, and the third integer to be both a square and a cube (after 0 and 1)
It is a deficient number, but only by a bit - like other powers of two, the sum of its factors is one less than it.