86579631 has 8 divisors (see below), whose sum is σ = 128266160. Its totient is φ = 57719736.

The previous prime is 86579629. The next prime is 86579639. The reversal of 86579631 is 13697568.

It is a happy number.

86579631 is a `hidden beast` number, since 8 + 6 + 5 + 7 + 9 + 631 = 666.

It is not a de Polignac number, because 86579631 - 2¹ = 86579629 is a prime.

It is a super-2 number, since 2×86579631² = 14992065008192322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86579639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1603300 + ... + 1603353.

It is an arithmetic number, because the mean of its divisors is an integer number (16033270).

Almost surely, 2^86579631 is an apocalyptic number.

86579631 is a deficient number, since it is larger than the sum of its proper divisors (41686529).

86579631 is a wasteful number, since it uses less digits than its factorization.

86579631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206662 (or 3206656 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 86579631 is about 9304.8176231455. The cubic root of 86579631 is about 442.3899410282.

The spelling of 86579631 in words is "eighty-six million, five hundred seventy-nine thousand, six hundred thirty-one".