656391932 has 12 divisors (see below), whose sum is σ = 1312783920. Its totient is φ = 281310816.

The previous prime is 656391893. The next prime is 656391949. The reversal of 656391932 is 239193656.

656391932 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11721257 + ... + 11721312.

It is an arithmetic number, because the mean of its divisors is an integer number (109398660).

Almost surely, 2^656391932 is an apocalyptic number.

It is an amenable number.

656391932 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

656391932 is a wasteful number, since it uses less digits than its factorization.

656391932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23442580 (or 23442578 counting only the distinct ones).

The product of its digits is 262440, while the sum is 44.

The square root of 656391932 is about 25620.1469941138. The cubic root of 656391932 is about 869.0693055201.

The spelling of 656391932 in words is "six hundred fifty-six million, three hundred ninety-one thousand, nine hundred thirty-two".