86738631 has 16 divisors (see below), whose sum is σ = 132969984. Its totient is φ = 49266144.

The previous prime is 86738621. The next prime is 86738633. The reversal of 86738631 is 13683768.

It is not a de Polignac number, because 86738631 - 2⁷ = 86738503 is a prime.

It is a super-2 number, since 2×86738631² = 15047180215508322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86738633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8860 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (8310624).

Almost surely, 2^86738631 is an apocalyptic number.

86738631 is a deficient number, since it is larger than the sum of its proper divisors (46231353).

86738631 is a wasteful number, since it uses less digits than its factorization.

86738631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24910.

The product of its digits is 145152, while the sum is 42.

The square root of 86738631 is about 9313.3576652032. The cubic root of 86738631 is about 442.6605858470.

The spelling of 86738631 in words is "eighty-six million, seven hundred thirty-eight thousand, six hundred thirty-one".