86157885 has 64 divisors (see below), whose sum is σ = 159584256. Its totient is φ = 39283200.

The previous prime is 86157881. The next prime is 86157893. The reversal of 86157885 is 58875168.

It is not a de Polignac number, because 86157885 - 2² = 86157881 is a prime.

It is a super-2 number, since 2×86157885² = 14846362295346450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86157881) 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 63 ways as a sum of consecutive naturals, for example, 276880 + ... + 277190.

It is an arithmetic number, because the mean of its divisors is an integer number (2493504).

Almost surely, 2^86157885 is an apocalyptic number.

It is an amenable number.

86157885 is a deficient number, since it is larger than the sum of its proper divisors (73426371).

86157885 is a wasteful number, since it uses less digits than its factorization.

86157885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426.

The product of its digits is 537600, while the sum is 48.

The square root of 86157885 is about 9282.1271807706. The cubic root of 86157885 is about 441.6704493960.

The spelling of 86157885 in words is "eighty-six million, one hundred fifty-seven thousand, eight hundred eighty-five".