564723257 has 8 divisors (see below), whose sum is σ = 660407616. Its totient is φ = 472791312.

The previous prime is 564723197. The next prime is 564723433. The reversal of 564723257 is 752327465.

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

It is not a de Polignac number, because 564723257 - 2¹⁶ = 564657721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564723157) 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, 937778 + ... + 938379.

It is an arithmetic number, because the mean of its divisors is an integer number (82550952).

Almost surely, 2^564723257 is an apocalyptic number.

It is an amenable number.

564723257 is a deficient number, since it is larger than the sum of its proper divisors (95684359).

564723257 is a wasteful number, since it uses less digits than its factorization.

564723257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876207.

The product of its digits is 352800, while the sum is 41.

The square root of 564723257 is about 23763.9066022403. The cubic root of 564723257 is about 826.5679429415.

The spelling of 564723257 in words is "five hundred sixty-four million, seven hundred twenty-three thousand, two hundred fifty-seven".