86785317 has 8 divisors (see below), whose sum is σ = 128570880. Its totient is φ = 57856860.

The previous prime is 86785297. The next prime is 86785319. The reversal of 86785317 is 71358768.

It is not a de Polignac number, because 86785317 - 2⁷ = 86785189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86785319) 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 in 7 ways as a sum of consecutive naturals, for example, 1607109 + ... + 1607162.

It is an arithmetic number, because the mean of its divisors is an integer number (16071360).

Almost surely, 2^86785317 is an apocalyptic number.

It is an amenable number.

86785317 is a deficient number, since it is larger than the sum of its proper divisors (41785563).

86785317 is a wasteful number, since it uses less digits than its factorization.

86785317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214280 (or 3214274 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 86785317 is about 9315.8637280716. The cubic root of 86785317 is about 442.7399904723.

The spelling of 86785317 in words is "eighty-six million, seven hundred eighty-five thousand, three hundred seventeen".