564464857 has 4 divisors (see below), whose sum is σ = 615779856. Its totient is φ = 513149860.

The previous prime is 564464819. The next prime is 564464869. The reversal of 564464857 is 758464465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564464857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 564464857.

It is not an unprimeable number, because it can be changed into a prime (564464807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25657483 + ... + 25657504.

It is an arithmetic number, because the mean of its divisors is an integer number (153944964).

Almost surely, 2^564464857 is an apocalyptic number.

It is an amenable number.

564464857 is a deficient number, since it is larger than the sum of its proper divisors (51314999).

564464857 is a wasteful number, since it uses less digits than its factorization.

564464857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51314998.

The product of its digits is 3225600, while the sum is 49.

The square root of 564464857 is about 23758.4691636477. The cubic root of 564464857 is about 826.4418530153.

The spelling of 564464857 in words is "five hundred sixty-four million, four hundred sixty-four thousand, eight hundred fifty-seven".