86704590731 has 16 divisors (see below), whose sum is σ = 100580639328. Its totient is φ = 73867315200.

The previous prime is 86704590691. The next prime is 86704590761. The reversal of 86704590731 is 13709540768.

It is a cyclic number.

It is not a de Polignac number, because 86704590731 - 2⁶ = 86704590667 is a prime.

It is a super-2 number, since 2×86704590731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86704590731.

It is not an unprimeable number, because it can be changed into a prime (86704590761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951410 + ... + 1038551.

It is an arithmetic number, because the mean of its divisors is an integer number (6286289958).

Almost surely, 2^86704590731 is an apocalyptic number.

86704590731 is a deficient number, since it is larger than the sum of its proper divisors (13876048597).

86704590731 is a wasteful number, since it uses less digits than its factorization.

86704590731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990222.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 86704590731 in words is "eighty-six billion, seven hundred four million, five hundred ninety thousand, seven hundred thirty-one".