86533491 has 32 divisors (see below), whose sum is σ = 130496256. Its totient is φ = 50544000.

The previous prime is 86533483. The next prime is 86533523. The reversal of 86533491 is 19433568.

It is not a de Polignac number, because 86533491 - 2³ = 86533483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86533481) 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 31 ways as a sum of consecutive naturals, for example, 159681 + ... + 160221.

It is an arithmetic number, because the mean of its divisors is an integer number (4078008).

Almost surely, 2^86533491 is an apocalyptic number.

86533491 is a deficient number, since it is larger than the sum of its proper divisors (43962765).

86533491 is a wasteful number, since it uses less digits than its factorization.

86533491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its digits is 77760, while the sum is 39.

The square root of 86533491 is about 9302.3379319395. The cubic root of 86533491 is about 442.3113409438.

The spelling of 86533491 in words is "eighty-six million, five hundred thirty-three thousand, four hundred ninety-one".