86731686 has 24 divisors (see below), whose sum is σ = 189295704. Its totient is φ = 28698720.

The previous prime is 86731679. The next prime is 86731703. The reversal of 86731686 is 68613768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15120 + ... + 20051.

It is an arithmetic number, because the mean of its divisors is an integer number (7887321).

Almost surely, 2^86731686 is an apocalyptic number.

86731686 is an abundant number, since it is smaller than the sum of its proper divisors (102564018).

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

86731686 is a wasteful number, since it uses less digits than its factorization.

86731686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35316 (or 35313 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 86731686 is about 9312.9848061725. The cubic root of 86731686 is about 442.6487711966.

The spelling of 86731686 in words is "eighty-six million, seven hundred thirty-one thousand, six hundred eighty-six".