85656858 has 32 divisors (see below), whose sum is σ = 196649856. Its totient is φ = 24365568.

The previous prime is 85656847. The next prime is 85656869. The reversal of 85656858 is 85865658.

It is an interprime number because it is at equal distance from previous prime (85656847) and next prime (85656869).

It is a self number, because there is not a number n which added to its sum of digits gives 85656858.

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 15 ways as a sum of consecutive naturals, for example, 5410 + ... + 14162.

It is an arithmetic number, because the mean of its divisors is an integer number (6145308).

Almost surely, 2^85656858 is an apocalyptic number.

85656858 is an abundant number, since it is smaller than the sum of its proper divisors (110992998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85656858 is a wasteful number, since it uses less digits than its factorization.

85656858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8998.

The product of its digits is 2304000, while the sum is 51.

The square root of 85656858 is about 9255.0990270229. The cubic root of 85656858 is about 440.8126476247.

The spelling of 85656858 in words is "eighty-five million, six hundred fifty-six thousand, eight hundred fifty-eight".