564297761 has 4 divisors (see below), whose sum is σ = 564349632. Its totient is φ = 564245892.

The previous prime is 564297749. The next prime is 564297787. The reversal of 564297761 is 167792465.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 564297761 - 2⁶ = 564297697 is a prime.

It is a super-2 number, since 2×564297761² = 636863926139226242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564297961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645 + ... + 33698.

It is an arithmetic number, because the mean of its divisors is an integer number (141087408).

Almost surely, 2^564297761 is an apocalyptic number.

It is an amenable number.

564297761 is a deficient number, since it is larger than the sum of its proper divisors (51871).

564297761 is a wasteful number, since it uses less digits than its factorization.

564297761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51870.

The product of its digits is 635040, while the sum is 47.

The square root of 564297761 is about 23754.9523468265. The cubic root of 564297761 is about 826.3602956754.

The spelling of 564297761 in words is "five hundred sixty-four million, two hundred ninety-seven thousand, seven hundred sixty-one".