564436723 has 4 divisors (see below), whose sum is σ = 572386608. Its totient is φ = 556486840.

The previous prime is 564436711. The next prime is 564436727. The reversal of 564436723 is 327634465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 564436723 - 2²¹ = 562339571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564436727) 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, 3974836 + ... + 3974977.

It is an arithmetic number, because the mean of its divisors is an integer number (143096652).

Almost surely, 2^564436723 is an apocalyptic number.

564436723 is a deficient number, since it is larger than the sum of its proper divisors (7949885).

564436723 is an equidigital number, since it uses as much as digits as its factorization.

564436723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949884.

The product of its digits is 362880, while the sum is 40.

The square root of 564436723 is about 23757.8770726679. The cubic root of 564436723 is about 826.4281223103.

The spelling of 564436723 in words is "five hundred sixty-four million, four hundred thirty-six thousand, seven hundred twenty-three".