656971344 has 80 divisors (see below), whose sum is σ = 1946621440. Its totient is φ = 211921920.

The previous prime is 656971327. The next prime is 656971351. The reversal of 656971344 is 443179656.

It is a super-2 number, since 2×656971344² = 863222693674332672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 656971344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11137 + ... + 37920.

It is an arithmetic number, because the mean of its divisors is an integer number (24332768).

Almost surely, 2^656971344 is an apocalyptic number.

It is an amenable number.

656971344 is an abundant number, since it is smaller than the sum of its proper divisors (1289650096).

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

656971344 is a wasteful number, since it uses less digits than its factorization.

656971344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49105 (or 49093 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 656971344 is about 25631.4522413382. The cubic root of 656971344 is about 869.3249460238.

The spelling of 656971344 in words is "six hundred fifty-six million, nine hundred seventy-one thousand, three hundred forty-four".