86566131 has 16 divisors (see below), whose sum is σ = 132669600. Its totient is φ = 55720224.

The previous prime is 86566127. The next prime is 86566153. The reversal of 86566131 is 13166568.

It is a happy number.

86566131 is a `hidden beast` number, since 86 + 566 + 13 + 1 = 666.

It is not a de Polignac number, because 86566131 - 2² = 86566127 is a prime.

It is a super-2 number, since 2×86566131² = 14987390072618322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86566031) 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, 54496 + ... + 56061.

It is an arithmetic number, because the mean of its divisors is an integer number (8291850).

Almost surely, 2^86566131 is an apocalyptic number.

86566131 is a deficient number, since it is larger than the sum of its proper divisors (46103469).

86566131 is a wasteful number, since it uses less digits than its factorization.

86566131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110595 (or 110589 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 86566131 is about 9304.0921642039. The cubic root of 86566131 is about 442.3669464948.

The spelling of 86566131 in words is "eighty-six million, five hundred sixty-six thousand, one hundred thirty-one".