656232620 has 12 divisors (see below), whose sum is σ = 1378088544. Its totient is φ = 262493040.

The previous prime is 656232601. The next prime is 656232641. The reversal of 656232620 is 26232656.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 16405796 + ... + 16405835.

It is an arithmetic number, because the mean of its divisors is an integer number (114840712).

Almost surely, 2^656232620 is an apocalyptic number.

It is an amenable number.

656232620 is an abundant number, since it is smaller than the sum of its proper divisors (721855924).

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

656232620 is a wasteful number, since it uses less digits than its factorization.

656232620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32811640 (or 32811638 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 656232620 is about 25617.0376897876. The cubic root of 656232620 is about 868.9989896183.

The spelling of 656232620 in words is "six hundred fifty-six million, two hundred thirty-two thousand, six hundred twenty".