564942641 has 4 divisors (see below), whose sum is σ = 574518000. Its totient is φ = 555367284.

The previous prime is 564942619. The next prime is 564942661. The reversal of 564942641 is 146249465.

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-564942641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564942601) 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, 4787591 + ... + 4787708.

It is an arithmetic number, because the mean of its divisors is an integer number (143629500).

Almost surely, 2^564942641 is an apocalyptic number.

It is an amenable number.

564942641 is a deficient number, since it is larger than the sum of its proper divisors (9575359).

564942641 is an equidigital number, since it uses as much as digits as its factorization.

564942641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575358.

The product of its digits is 207360, while the sum is 41.

The square root of 564942641 is about 23768.5220617522. The cubic root of 564942641 is about 826.6749642731.

The spelling of 564942641 in words is "five hundred sixty-four million, nine hundred forty-two thousand, six hundred forty-one".