656912874 has 48 divisors (see below), whose sum is σ = 1370938464. Its totient is φ = 209694240.

The previous prime is 656912869. The next prime is 656912891. The reversal of 656912874 is 478219656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1118809 + ... + 1119395.

It is an arithmetic number, because the mean of its divisors is an integer number (28561218).

Almost surely, 2^656912874 is an apocalyptic number.

656912874 is an abundant number, since it is smaller than the sum of its proper divisors (714025590).

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

656912874 is a wasteful number, since it uses less digits than its factorization.

656912874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 700 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 656912874 is about 25630.3116251051. The cubic root of 656912874 is about 869.2991554836.

The spelling of 656912874 in words is "six hundred fifty-six million, nine hundred twelve thousand, eight hundred seventy-four".