656663592 has 64 divisors (see below), whose sum is σ = 1771217280. Its totient is φ = 201676032.

The previous prime is 656663551. The next prime is 656663599. The reversal of 656663592 is 295366656.

It is not an unprimeable number, because it can be changed into a prime (656663599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200238 + ... + 203490.

It is an arithmetic number, because the mean of its divisors is an integer number (27675270).

Almost surely, 2^656663592 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 656663592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885608640).

656663592 is an abundant number, since it is smaller than the sum of its proper divisors (1114553688).

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

656663592 is a wasteful number, since it uses less digits than its factorization.

656663592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3918 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 48.

The square root of 656663592 is about 25625.4481326669. The cubic root of 656663592 is about 869.1891824784.

The spelling of 656663592 in words is "six hundred fifty-six million, six hundred sixty-three thousand, five hundred ninety-two".