64663712 has 24 divisors (see below), whose sum is σ = 128923200. Its totient is φ = 31921344.

The previous prime is 64663673. The next prime is 64663759. The reversal of 64663712 is 21736646.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10262 + ... + 15317.

It is an arithmetic number, because the mean of its divisors is an integer number (5371800).

Almost surely, 2^64663712 is an apocalyptic number.

It is an amenable number.

64663712 is a deficient number, since it is larger than the sum of its proper divisors (64259488).

64663712 is a wasteful number, since it uses less digits than its factorization.

64663712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25668 (or 25660 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 64663712 is about 8041.3750068008. The cubic root of 64663712 is about 401.3779808044.

The spelling of 64663712 in words is "sixty-four million, six hundred sixty-three thousand, seven hundred twelve".