564773987 has 2 divisors, whose sum is σ = 564773988. Its totient is φ = 564773986.

The previous prime is 564773977. The next prime is 564774011. The reversal of 564773987 is 789377465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564773987 - 2⁴ = 564773971 is a prime.

It is not a weakly prime, because it can be changed into another prime (564773977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282386993 + 282386994.

It is an arithmetic number, because the mean of its divisors is an integer number (282386994).

Almost surely, 2^564773987 is an apocalyptic number.

564773987 is a deficient number, since it is larger than the sum of its proper divisors (1).

564773987 is an equidigital number, since it uses as much as digits as its factorization.

564773987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 56.

The square root of 564773987 is about 23764.9739532784. The cubic root of 564773987 is about 826.5926928438.

The spelling of 564773987 in words is "five hundred sixty-four million, seven hundred seventy-three thousand, nine hundred eighty-seven".