656648944 has 40 divisors (see below), whose sum is σ = 1500919808. Its totient is φ = 272341440.

The previous prime is 656648921. The next prime is 656648983. The reversal of 656648944 is 449846656.

It is a happy number.

656648944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 656648891 and 656648900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91092 + ... + 98035.

Almost surely, 2^656648944 is an apocalyptic number.

It is an amenable number.

656648944 is an abundant number, since it is smaller than the sum of its proper divisors (844270864).

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

656648944 is a wasteful number, since it uses less digits than its factorization.

656648944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189173 (or 189167 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 52.

The square root of 656648944 is about 25625.1623214371. The cubic root of 656648944 is about 869.1827195152.

The spelling of 656648944 in words is "six hundred fifty-six million, six hundred forty-eight thousand, nine hundred forty-four".