220668264 has 48 divisors (see below), whose sum is σ = 598462020. Its totient is φ = 73455360.

The previous prime is 220668209. The next prime is 220668271. The reversal of 220668264 is 462866022.

It can be written as a sum of positive squares in 2 ways, for example, as 206152164 + 14516100 = 14358^2 + 3810^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66124 + ... + 69380.

Almost surely, 2^220668264 is an apocalyptic number.

220668264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220668264 is an abundant number, since it is smaller than the sum of its proper divisors (377793756).

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

220668264 is a wasteful number, since it uses less digits than its factorization.

220668264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 4203 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 220668264 is about 14854.9070680365. The cubic root of 220668264 is about 604.2916957212.

The spelling of 220668264 in words is "two hundred twenty million, six hundred sixty-eight thousand, two hundred sixty-four".