564830640 has 120 divisors (see below), whose sum is σ = 2069363088. Its totient is φ = 136926720.

The previous prime is 564830639. The next prime is 564830653. The reversal of 564830640 is 46038465.

564830640 is a `hidden beast` number, since 5 + 6 + 4 + 8 + 3 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 564830595 and 564830604.

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, 27739 + ... + 43578.

Almost surely, 2^564830640 is an apocalyptic number.

It is an amenable number.

564830640 is an abundant number, since it is smaller than the sum of its proper divisors (1504532448).

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

564830640 is a wasteful number, since it uses less digits than its factorization.

564830640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71347 (or 71338 counting only the distinct ones).

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

The square root of 564830640 is about 23766.1658666264. The cubic root of 564830640 is about 826.6203306784.

The spelling of 564830640 in words is "five hundred sixty-four million, eight hundred thirty thousand, six hundred forty".