656940796 has 12 divisors (see below), whose sum is σ = 1150096752. Its totient is φ = 328341728.

The previous prime is 656940793. The next prime is 656940811. The reversal of 656940796 is 697049656.

It is a super-2 number, since 2×656940796² = 863142418898227232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656940793) 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, 20185 + ... + 41488.

It is an arithmetic number, because the mean of its divisors is an integer number (95841396).

Almost surely, 2^656940796 is an apocalyptic number.

It is an amenable number.

656940796 is a deficient number, since it is larger than the sum of its proper divisors (493155956).

656940796 is a wasteful number, since it uses less digits than its factorization.

656940796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64340 (or 64338 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 656940796 is about 25630.8563259209. The cubic root of 656940796 is about 869.3114717932.

The spelling of 656940796 in words is "six hundred fifty-six million, nine hundred forty thousand, seven hundred ninety-six".