85986587 has 2 divisors, whose sum is σ = 85986588. Its totient is φ = 85986586.

The previous prime is 85986577. The next prime is 85986599. The reversal of 85986587 is 78568958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85986587 - 2¹⁰ = 85985563 is a prime.

It is not a weakly prime, because it can be changed into another prime (85986577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42993293 + 42993294.

It is an arithmetic number, because the mean of its divisors is an integer number (42993294).

Almost surely, 2^85986587 is an apocalyptic number.

85986587 is a deficient number, since it is larger than the sum of its proper divisors (1).

85986587 is an equidigital number, since it uses as much as digits as its factorization.

85986587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 56.

The square root of 85986587 is about 9272.8952868023. The cubic root of 85986587 is about 441.3775473579.

The spelling of 85986587 in words is "eighty-five million, nine hundred eighty-six thousand, five hundred eighty-seven".