564390943 has 2 divisors, whose sum is σ = 564390944. Its totient is φ = 564390942.

The previous prime is 564390941. The next prime is 564390947. The reversal of 564390943 is 349093465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564390943 - 2¹ = 564390941 is a prime.

Together with 564390941, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 564390943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564390941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282195471 + 282195472.

It is an arithmetic number, because the mean of its divisors is an integer number (282195472).

Almost surely, 2^564390943 is an apocalyptic number.

564390943 is a deficient number, since it is larger than the sum of its proper divisors (1).

564390943 is an equidigital number, since it uses as much as digits as its factorization.

564390943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 564390943 is about 23756.9135832077. The cubic root of 564390943 is about 826.4057785583.

The spelling of 564390943 in words is "five hundred sixty-four million, three hundred ninety thousand, nine hundred forty-three".