220155664 has 20 divisors (see below), whose sum is σ = 432561600. Its totient is φ = 108526880.

The previous prime is 220155653. The next prime is 220155667. The reversal of 220155664 is 466551022.

220155664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220155667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95764 + ... + 98035.

It is an arithmetic number, because the mean of its divisors is an integer number (21628080).

Almost surely, 2^220155664 is an apocalyptic number.

It is an amenable number.

220155664 is a deficient number, since it is larger than the sum of its proper divisors (212405936).

220155664 is a wasteful number, since it uses less digits than its factorization.

220155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193878 (or 193872 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 220155664 is about 14837.6434786660. The cubic root of 220155664 is about 603.8234210370.

The spelling of 220155664 in words is "two hundred twenty million, one hundred fifty-five thousand, six hundred sixty-four".