664512792 has 16 divisors (see below), whose sum is σ = 1661282040. Its totient is φ = 221504256.

The previous prime is 664512791. The next prime is 664512799. The reversal of 664512792 is 297215466.

664512792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664512791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13843993 + ... + 13844040.

Almost surely, 2^664512792 is an apocalyptic number.

It is an amenable number.

664512792 is an abundant number, since it is smaller than the sum of its proper divisors (996769248).

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

664512792 is a wasteful number, since it uses less digits than its factorization.

664512792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27688042 (or 27688038 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 664512792 is about 25778.1456276436. The cubic root of 664512792 is about 872.6386583243.

The spelling of 664512792 in words is "six hundred sixty-four million, five hundred twelve thousand, seven hundred ninety-two".