564682861 has 2 divisors, whose sum is σ = 564682862. Its totient is φ = 564682860.

The previous prime is 564682843. The next prime is 564682889. The reversal of 564682861 is 168286465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443902761 + 120780100 = 21069^2 + 10990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564682861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564682801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282341430 + 282341431.

It is an arithmetic number, because the mean of its divisors is an integer number (282341431).

Almost surely, 2^564682861 is an apocalyptic number.

It is an amenable number.

564682861 is a deficient number, since it is larger than the sum of its proper divisors (1).

564682861 is an equidigital number, since it uses as much as digits as its factorization.

564682861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 46.

The square root of 564682861 is about 23763.0566426123. The cubic root of 564682861 is about 826.5482336802.

The spelling of 564682861 in words is "five hundred sixty-four million, six hundred eighty-two thousand, eight hundred sixty-one".