656909344 has 192 divisors, whose sum is σ = 1734082560. Its totient is φ = 237634560.

The previous prime is 656909327. The next prime is 656909377. The reversal of 656909344 is 443909656.

It is a junction number, because it is equal to n+sod(n) for n = 656909294 and 656909303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1714977 + ... + 1715359.

It is an arithmetic number, because the mean of its divisors is an integer number (9031680).

Almost surely, 2^656909344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656909344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867041280).

656909344 is an abundant number, since it is smaller than the sum of its proper divisors (1077173216).

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

656909344 is a wasteful number, since it uses less digits than its factorization.

656909344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 656909344 is about 25630.2427612381. The cubic root of 656909344 is about 869.2975983864.

The spelling of 656909344 in words is "six hundred fifty-six million, nine hundred nine thousand, three hundred forty-four".