656852664 has 128 divisors (see below), whose sum is σ = 1905120000. Its totient is φ = 186906624.

The previous prime is 656852659. The next prime is 656852671. The reversal of 656852664 is 466258656.

656852664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 311887 + ... + 313985.

It is an arithmetic number, because the mean of its divisors is an integer number (14883750).

Almost surely, 2^656852664 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 656852664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952560000).

656852664 is an abundant number, since it is smaller than the sum of its proper divisors (1248267336).

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

656852664 is a wasteful number, since it uses less digits than its factorization.

656852664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2193 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The square root of 656852664 is about 25629.1370123928. The cubic root of 656852664 is about 869.2725958471.

The spelling of 656852664 in words is "six hundred fifty-six million, eight hundred fifty-two thousand, six hundred sixty-four".