220590564 has 12 divisors (see below), whose sum is σ = 514711344. Its totient is φ = 73530184.

The previous prime is 220590533. The next prime is 220590569. The reversal of 220590564 is 465095022.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (220590569) 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, 9191262 + ... + 9191285.

It is an arithmetic number, because the mean of its divisors is an integer number (42892612).

Almost surely, 2^220590564 is an apocalyptic number.

It is an amenable number.

220590564 is an abundant number, since it is smaller than the sum of its proper divisors (294120780).

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

220590564 is a wasteful number, since it uses less digits than its factorization.

220590564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18382554 (or 18382552 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 220590564 is about 14852.2915403651. The cubic root of 220590564 is about 604.2207612244.

The spelling of 220590564 in words is "two hundred twenty million, five hundred ninety thousand, five hundred sixty-four".