86146731 has 12 divisors (see below), whose sum is σ = 135746520. Its totient is φ = 52210080.

The previous prime is 86146691. The next prime is 86146747. The reversal of 86146731 is 13764168.

86146731 is a `hidden beast` number, since 8 + 614 + 6 + 7 + 31 = 666.

It is not a de Polignac number, because 86146731 - 2⁷ = 86146603 is a prime.

It is a super-2 number, since 2×86146731² = 14842518523972722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (86146751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434986 + ... + 435183.

It is an arithmetic number, because the mean of its divisors is an integer number (11312210).

Almost surely, 2^86146731 is an apocalyptic number.

86146731 is a deficient number, since it is larger than the sum of its proper divisors (49599789).

86146731 is a wasteful number, since it uses less digits than its factorization.

86146731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870186 (or 870183 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 86146731 is about 9281.5263292198. The cubic root of 86146731 is about 441.6513890210.

The spelling of 86146731 in words is "eighty-six million, one hundred forty-six thousand, seven hundred thirty-one".