86140624 has 20 divisors (see below), whose sum is σ = 167059620. Its totient is φ = 43028480.

The previous prime is 86140609. The next prime is 86140669. The reversal of 86140624 is 42604168.

It can be written as a sum of positive squares in 2 ways, for example, as 34012224 + 52128400 = 5832^2 + 7220^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20634 + ... + 24454.

It is an arithmetic number, because the mean of its divisors is an integer number (8352981).

Almost surely, 2^86140624 is an apocalyptic number.

It is an amenable number.

86140624 is a deficient number, since it is larger than the sum of its proper divisors (80918996).

86140624 is a wasteful number, since it uses less digits than its factorization.

86140624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238 (or 5232 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 86140624 is about 9281.1973365509. The cubic root of 86140624 is about 441.6409524525.

The spelling of 86140624 in words is "eighty-six million, one hundred forty thousand, six hundred twenty-four".