564362820 has 72 divisors (see below), whose sum is σ = 1956462144. Its totient is φ = 128996928.

The previous prime is 564362819. The next prime is 564362861. The reversal of 564362820 is 28263465.

564362820 is a `hidden beast` number, since 5 + 6 + 4 + 3 + 628 + 20 = 666.

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 23 ways as a sum of consecutive naturals, for example, 222694 + ... + 225213.

Almost surely, 2^564362820 is an apocalyptic number.

It is an amenable number.

564362820 is an abundant number, since it is smaller than the sum of its proper divisors (1392099324).

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

564362820 is a wasteful number, since it uses less digits than its factorization.

564362820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447929 (or 447924 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 564362820 is about 23756.3216849747. The cubic root of 564362820 is about 826.3920520236.

The spelling of 564362820 in words is "five hundred sixty-four million, three hundred sixty-two thousand, eight hundred twenty".