564542761 has 2 divisors, whose sum is σ = 564542762. Its totient is φ = 564542760.

The previous prime is 564542747. The next prime is 564542773. The reversal of 564542761 is 167245465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289646361 + 274896400 = 17019^2 + 16580^2 .

It is a cyclic number.

It is not a de Polignac number, because 564542761 - 2⁵ = 564542729 is a prime.

It is not a weakly prime, because it can be changed into another prime (564542791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282271380 + 282271381.

It is an arithmetic number, because the mean of its divisors is an integer number (282271381).

Almost surely, 2^564542761 is an apocalyptic number.

It is an amenable number.

564542761 is a deficient number, since it is larger than the sum of its proper divisors (1).

564542761 is an equidigital number, since it uses as much as digits as its factorization.

564542761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The square root of 564542761 is about 23760.1086066541. The cubic root of 564542761 is about 826.4798714226.

The spelling of 564542761 in words is "five hundred sixty-four million, five hundred forty-two thousand, seven hundred sixty-one".