220597656 has 16 divisors (see below), whose sum is σ = 551494200. Its totient is φ = 73532544.

The previous prime is 220597633. The next prime is 220597667. The reversal of 220597656 is 656795022.

It is a congruent number.

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, 4595761 + ... + 4595808.

Almost surely, 2^220597656 is an apocalyptic number.

It is an amenable number.

220597656 is an abundant number, since it is smaller than the sum of its proper divisors (330896544).

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

220597656 is a wasteful number, since it uses less digits than its factorization.

220597656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191578 (or 9191574 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 220597656 is about 14852.5302894827. The cubic root of 220597656 is about 604.2272363997.

The spelling of 220597656 in words is "two hundred twenty million, five hundred ninety-seven thousand, six hundred fifty-six".