86631018 has 32 divisors (see below), whose sum is σ = 182255616. Its totient is φ = 27398448.

The previous prime is 86631007. The next prime is 86631029. The reversal of 86631018 is 81013668.

It is an interprime number because it is at equal distance from previous prime (86631007) and next prime (86631029).

It is a self number, because there is not a number n which added to its sum of digits gives 86631018.

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, 15055 + ... + 19997.

It is an arithmetic number, because the mean of its divisors is an integer number (5695488).

Almost surely, 2^86631018 is an apocalyptic number.

86631018 is an abundant number, since it is smaller than the sum of its proper divisors (95624598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86631018 is a wasteful number, since it uses less digits than its factorization.

86631018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 86631018 is about 9307.5785250515. The cubic root of 86631018 is about 442.4774465826.

The spelling of 86631018 in words is "eighty-six million, six hundred thirty-one thousand, eighteen".