86643165 has 32 divisors (see below), whose sum is σ = 158812416. Its totient is φ = 39513600.

The previous prime is 86643157. The next prime is 86643187. The reversal of 86643165 is 56134668.

It is not a de Polignac number, because 86643165 - 2³ = 86643157 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 62419 + ... + 63791.

It is an arithmetic number, because the mean of its divisors is an integer number (4962888).

Almost surely, 2^86643165 is an apocalyptic number.

It is an amenable number.

86643165 is a deficient number, since it is larger than the sum of its proper divisors (72169251).

86643165 is a wasteful number, since it uses less digits than its factorization.

86643165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989.

The product of its digits is 103680, while the sum is 39.

The square root of 86643165 is about 9308.2310349497. The cubic root of 86643165 is about 442.4981263287.

The spelling of 86643165 in words is "eighty-six million, six hundred forty-three thousand, one hundred sixty-five".