656933964 has 24 divisors (see below), whose sum is σ = 1574275248. Its totient is φ = 213059520.

The previous prime is 656933951. The next prime is 656933969. The reversal of 656933964 is 469339656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (656933969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739347 + ... + 740234.

It is an arithmetic number, because the mean of its divisors is an integer number (65594802).

Almost surely, 2^656933964 is an apocalyptic number.

It is an amenable number.

656933964 is an abundant number, since it is smaller than the sum of its proper divisors (917341284).

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

656933964 is a wasteful number, since it uses less digits than its factorization.

656933964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479625 (or 1479623 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 51.

The square root of 656933964 is about 25630.7230487164. The cubic root of 656933964 is about 869.3084582510.

The spelling of 656933964 in words is "six hundred fifty-six million, nine hundred thirty-three thousand, nine hundred sixty-four".