564994257 has 8 divisors (see below), whose sum is σ = 767539584. Its totient is φ = 369555888.

The previous prime is 564994253. The next prime is 564994267. The reversal of 564994257 is 752499465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 564994257 - 2² = 564994253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (564994253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776553 + ... + 1776870.

It is an arithmetic number, because the mean of its divisors is an integer number (95942448).

Almost surely, 2^564994257 is an apocalyptic number.

It is an amenable number.

564994257 is a deficient number, since it is larger than the sum of its proper divisors (202545327).

564994257 is a wasteful number, since it uses less digits than its factorization.

564994257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553479.

The product of its digits is 2721600, while the sum is 51.

The square root of 564994257 is about 23769.6078427895. The cubic root of 564994257 is about 826.7001399001.

The spelling of 564994257 in words is "five hundred sixty-four million, nine hundred ninety-four thousand, two hundred fifty-seven".