564320639 has 2 divisors, whose sum is σ = 564320640. Its totient is φ = 564320638.

The previous prime is 564320579. The next prime is 564320671. The reversal of 564320639 is 936023465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564320639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564320689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282160319 + 282160320.

It is an arithmetic number, because the mean of its divisors is an integer number (282160320).

Almost surely, 2^564320639 is an apocalyptic number.

564320639 is a deficient number, since it is larger than the sum of its proper divisors (1).

564320639 is an equidigital number, since it uses as much as digits as its factorization.

564320639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 564320639 is about 23755.4338836402. The cubic root of 564320639 is about 826.3714630748.

The spelling of 564320639 in words is "five hundred sixty-four million, three hundred twenty thousand, six hundred thirty-nine".