564280785 has 24 divisors (see below), whose sum is σ = 978681600. Its totient is φ = 300766752.

The previous prime is 564280763. The next prime is 564280799. The reversal of 564280785 is 587082465.

564280785 is a `hidden beast` number, since 564 + 2 + 8 + 0 + 7 + 85 = 666.

It is not a de Polignac number, because 564280785 - 2⁶ = 564280721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 564280785.

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, 105342 + ... + 110568.

It is an arithmetic number, because the mean of its divisors is an integer number (40778400).

Almost surely, 2^564280785 is an apocalyptic number.

It is an amenable number.

564280785 is a deficient number, since it is larger than the sum of its proper divisors (414400815).

564280785 is a wasteful number, since it uses less digits than its factorization.

564280785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 564280785 is about 23754.5950291728. The cubic root of 564280785 is about 826.3520090142.

The spelling of 564280785 in words is "five hundred sixty-four million, two hundred eighty thousand, seven hundred eighty-five".