86390565 has 16 divisors (see below), whose sum is σ = 142992000. Its totient is φ = 44485952.

The previous prime is 86390531. The next prime is 86390581. The reversal of 86390565 is 56509368.

It is a cyclic number.

It is not a de Polignac number, because 86390565 - 2⁶ = 86390501 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 98865 + ... + 99734.

It is an arithmetic number, because the mean of its divisors is an integer number (8937000).

Almost surely, 2^86390565 is an apocalyptic number.

It is an amenable number.

86390565 is a deficient number, since it is larger than the sum of its proper divisors (56601435).

86390565 is a wasteful number, since it uses less digits than its factorization.

86390565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198636.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 86390565 is about 9294.6524948489. The cubic root of 86390565 is about 442.0676871968.

The spelling of 86390565 in words is "eighty-six million, three hundred ninety thousand, five hundred sixty-five".