664462372 has 12 divisors (see below), whose sum is σ = 1328924800. Its totient is φ = 284769576.

The previous prime is 664462367. The next prime is 664462397. The reversal of 664462372 is 273264466.

664462372 is an admirable number.

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, 11865372 + ... + 11865427.

Almost surely, 2^664462372 is an apocalyptic number.

It is an amenable number.

664462372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664462372 is a wasteful number, since it uses less digits than its factorization.

664462372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23730810 (or 23730808 counting only the distinct ones).

The product of its digits is 290304, while the sum is 40.

The square root of 664462372 is about 25777.1676489098. The cubic root of 664462372 is about 872.6165872398.

The spelling of 664462372 in words is "six hundred sixty-four million, four hundred sixty-two thousand, three hundred seventy-two".