656394164 has 12 divisors (see below), whose sum is σ = 1151892000. Its totient is φ = 327282168.

The previous prime is 656394161. The next prime is 656394169. The reversal of 656394164 is 461493656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656394161) 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, 227114 + ... + 229985.

It is an arithmetic number, because the mean of its divisors is an integer number (95991000).

Almost surely, 2^656394164 is an apocalyptic number.

It is an amenable number.

656394164 is a deficient number, since it is larger than the sum of its proper divisors (495497836).

656394164 is a wasteful number, since it uses less digits than its factorization.

656394164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457462 (or 457460 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 656394164 is about 25620.1905535458. The cubic root of 656394164 is about 869.0702905822.

The spelling of 656394164 in words is "six hundred fifty-six million, three hundred ninety-four thousand, one hundred sixty-four".