220990608 has 30 divisors (see below), whose sum is σ = 618467174. Its totient is φ = 73663488.

The previous prime is 220990607. The next prime is 220990613. The reversal of 220990608 is 806099022.

It can be written as a sum of positive squares in only one way, i.e., 215737344 + 5253264 = 14688^2 + 2292^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220990607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 767185 + ... + 767472.

Almost surely, 2^220990608 is an apocalyptic number.

It is an amenable number.

220990608 is an abundant number, since it is smaller than the sum of its proper divisors (397476566).

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

220990608 is a wasteful number, since it uses less digits than its factorization.

220990608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534671 (or 1534662 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 220990608 is about 14865.7528568183. The cubic root of 220990608 is about 604.5857948491.

The spelling of 220990608 in words is "two hundred twenty million, nine hundred ninety thousand, six hundred eight".