564020689 has 2 divisors, whose sum is σ = 564020690. Its totient is φ = 564020688.

The previous prime is 564020657. The next prime is 564020693. The reversal of 564020689 is 986020465.

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., 397404225 + 166616464 = 19935^2 + 12908^2 .

It is a cyclic number.

It is not a de Polignac number, because 564020689 - 2⁵ = 564020657 is a prime.

It is not a weakly prime, because it can be changed into another prime (564020089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282010344 + 282010345.

It is an arithmetic number, because the mean of its divisors is an integer number (282010345).

Almost surely, 2^564020689 is an apocalyptic number.

It is an amenable number.

564020689 is a deficient number, since it is larger than the sum of its proper divisors (1).

564020689 is an equidigital number, since it uses as much as digits as its factorization.

564020689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 564020689 is about 23749.1197521087. The cubic root of 564020689 is about 826.2250250202.

The spelling of 564020689 in words is "five hundred sixty-four million, twenty thousand, six hundred eighty-nine".