86585631 has 8 divisors (see below), whose sum is σ = 125942784. Its totient is φ = 52476120.

The previous prime is 86585621. The next prime is 86585633. The reversal of 86585631 is 13658568.

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

It is not a de Polignac number, because 86585631 - 2⁵ = 86585599 is a prime.

It is a super-2 number, since 2×86585631² = 14994142991336322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86585633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1311871 + ... + 1311936.

It is an arithmetic number, because the mean of its divisors is an integer number (15742848).

Almost surely, 2^86585631 is an apocalyptic number.

86585631 is a deficient number, since it is larger than the sum of its proper divisors (39357153).

86585631 is a wasteful number, since it uses less digits than its factorization.

86585631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623821.

The product of its digits is 172800, while the sum is 42.

The square root of 86585631 is about 9305.1400311871. The cubic root of 86585631 is about 442.4001600535.

The spelling of 86585631 in words is "eighty-six million, five hundred eighty-five thousand, six hundred thirty-one".