87568057 has 2 divisors, whose sum is σ = 87568058. Its totient is φ = 87568056.

The previous prime is 87568043. The next prime is 87568069. The reversal of 87568057 is 75086578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72233001 + 15335056 = 8499^2 + 3916^2 .

It is a cyclic number.

It is not a de Polignac number, because 87568057 - 2²³ = 79179449 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87567998 and 87568016.

It is not a weakly prime, because it can be changed into another prime (87563057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43784028 + 43784029.

It is an arithmetic number, because the mean of its divisors is an integer number (43784029).

Almost surely, 2^87568057 is an apocalyptic number.

It is an amenable number.

87568057 is a deficient number, since it is larger than the sum of its proper divisors (1).

87568057 is an equidigital number, since it uses as much as digits as its factorization.

87568057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 87568057 is about 9357.7805595130. The cubic root of 87568057 is about 444.0670721523.

The spelling of 87568057 in words is "eighty-seven million, five hundred sixty-eight thousand, fifty-seven".