86385631 has 8 divisors (see below), whose sum is σ = 91284480. Its totient is φ = 81582072.

The previous prime is 86385589. The next prime is 86385659. The reversal of 86385631 is 13658368.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86385631 - 2⁷ = 86385503 is a prime.

It is a super-2 number, since 2×86385631² = 14924954486536322, 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 (86385731) 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, 21955 + ... + 25588.

It is an arithmetic number, because the mean of its divisors is an integer number (11410560).

Almost surely, 2^86385631 is an apocalyptic number.

86385631 is a deficient number, since it is larger than the sum of its proper divisors (4898849).

86385631 is a wasteful number, since it uses less digits than its factorization.

86385631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47645.

The product of its digits is 103680, while the sum is 40.

The square root of 86385631 is about 9294.3870696243. The cubic root of 86385631 is about 442.0592711408.

The spelling of 86385631 in words is "eighty-six million, three hundred eighty-five thousand, six hundred thirty-one".