86564587 has 2 divisors, whose sum is σ = 86564588. Its totient is φ = 86564586.

The previous prime is 86564581. The next prime is 86564591. The reversal of 86564587 is 78546568.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86564587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86564587.

It is not a weakly prime, because it can be changed into another prime (86564581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43282293 + 43282294.

It is an arithmetic number, because the mean of its divisors is an integer number (43282294).

Almost surely, 2^86564587 is an apocalyptic number.

86564587 is a deficient number, since it is larger than the sum of its proper divisors (1).

86564587 is an equidigital number, since it uses as much as digits as its factorization.

86564587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 49.

The square root of 86564587 is about 9304.0091895913. The cubic root of 86564587 is about 442.3643164492.

The spelling of 86564587 in words is "eighty-six million, five hundred sixty-four thousand, five hundred eighty-seven".