220566568 has 32 divisors (see below), whose sum is σ = 438595560. Its totient is φ = 103628800.

The previous prime is 220566559. The next prime is 220566587. The reversal of 220566568 is 865665022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207302404 + 13264164 = 14398^2 + 3642^2 .

It is a super-2 number, since 2×220566568² = 97299221838597248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220566568.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136968 + ... + 138568.

Almost surely, 2^220566568 is an apocalyptic number.

It is an amenable number.

220566568 is a deficient number, since it is larger than the sum of its proper divisors (218028992).

220566568 is a wasteful number, since it uses less digits than its factorization.

220566568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 220566568 is about 14851.4836969240. The cubic root of 220566568 is about 604.1988512404.

The spelling of 220566568 in words is "two hundred twenty million, five hundred sixty-six thousand, five hundred sixty-eight".