657912964 has 6 divisors (see below), whose sum is σ = 1151347694. Its totient is φ = 328956480.

The previous prime is 657912883. The next prime is 657912967. The reversal of 657912964 is 469219756.

It is a happy number.

657912964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 656896900 + 1016064 = 25630^2 + 1008^2 .

It is not an unprimeable number, because it can be changed into a prime (657912967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82239117 + ... + 82239124.

Almost surely, 2^657912964 is an apocalyptic number.

It is an amenable number.

657912964 is a deficient number, since it is larger than the sum of its proper divisors (493434730).

657912964 is a wasteful number, since it uses less digits than its factorization.

657912964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164478245 (or 164478243 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 657912964 is about 25649.8141123869. The cubic root of 657912964 is about 869.7400747272.

The spelling of 657912964 in words is "six hundred fifty-seven million, nine hundred twelve thousand, nine hundred sixty-four".