564987220 has 24 divisors (see below), whose sum is σ = 1355969664. Its totient is φ = 193709856.

The previous prime is 564987209. The next prime is 564987229. The reversal of 564987220 is 22789465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564987229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2017672 + ... + 2017951.

It is an arithmetic number, because the mean of its divisors is an integer number (56498736).

Almost surely, 2^564987220 is an apocalyptic number.

It is an amenable number.

564987220 is an abundant number, since it is smaller than the sum of its proper divisors (790982444).

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

564987220 is a wasteful number, since it uses less digits than its factorization.

564987220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035639 (or 4035637 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 564987220 is about 23769.4598171688. The cubic root of 564987220 is about 826.6967077041.

The spelling of 564987220 in words is "five hundred sixty-four million, nine hundred eighty-seven thousand, two hundred twenty".