564515780 has 24 divisors (see below), whose sum is σ = 1191697920. Its totient is φ = 224622560.

The previous prime is 564515737. The next prime is 564515801. The reversal of 564515780 is 87515465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70070 + ... + 77709.

It is an arithmetic number, because the mean of its divisors is an integer number (49654080).

Almost surely, 2^564515780 is an apocalyptic number.

It is an amenable number.

564515780 is an abundant number, since it is smaller than the sum of its proper divisors (627182140).

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

564515780 is a wasteful number, since it uses less digits than its factorization.

564515780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147979 (or 147977 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 564515780 is about 23759.5408204788. The cubic root of 564515780 is about 826.4667046558.

The spelling of 564515780 in words is "five hundred sixty-four million, five hundred fifteen thousand, seven hundred eighty".