86616785 has 16 divisors (see below), whose sum is σ = 111456000. Its totient is φ = 64386816.

The previous prime is 86616773. The next prime is 86616791. The reversal of 86616785 is 58761668.

It is a cyclic number.

It is not a de Polignac number, because 86616785 - 2⁴ = 86616769 is a prime.

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, 266 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (6966000).

Almost surely, 2^86616785 is an apocalyptic number.

86616785 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86616785 is a deficient number, since it is larger than the sum of its proper divisors (24839215).

86616785 is a wasteful number, since it uses less digits than its factorization.

86616785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000.

The product of its digits is 483840, while the sum is 47.

The square root of 86616785 is about 9306.8139016529. The cubic root of 86616785 is about 442.4532130515.

The spelling of 86616785 in words is "eighty-six million, six hundred sixteen thousand, seven hundred eighty-five".