86624931 has 8 divisors (see below), whose sum is σ = 115625664. Its totient is φ = 57687080.

The previous prime is 86624927. The next prime is 86624947. The reversal of 86624931 is 13942668.

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

It is a cyclic number.

It is not a de Polignac number, because 86624931 - 2² = 86624927 is a prime.

It is a super-2 number, since 2×86624931² = 15007757341509522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86624931.

It is not an unprimeable number, because it can be changed into a prime (86624981) 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, 12405 + ... + 18086.

It is an arithmetic number, because the mean of its divisors is an integer number (14453208).

Almost surely, 2^86624931 is an apocalyptic number.

86624931 is a deficient number, since it is larger than the sum of its proper divisors (29000733).

86624931 is a wasteful number, since it uses less digits than its factorization.

86624931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31441.

The product of its digits is 62208, while the sum is 39.

The square root of 86624931 is about 9307.2515277068. The cubic root of 86624931 is about 442.4670829994.

The spelling of 86624931 in words is "eighty-six million, six hundred twenty-four thousand, nine hundred thirty-one".