85135868 has 6 divisors (see below), whose sum is σ = 148987776. Its totient is φ = 42567932.

The previous prime is 85135823. The next prime is 85135871. The reversal of 85135868 is 86853158.

It is a super-2 number, since 2×85135868² = 14496232040226848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10641980 + ... + 10641987.

It is an arithmetic number, because the mean of its divisors is an integer number (24831296).

Almost surely, 2^85135868 is an apocalyptic number.

It is an amenable number.

85135868 is a deficient number, since it is larger than the sum of its proper divisors (63851908).

85135868 is a wasteful number, since it uses less digits than its factorization.

85135868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283971 (or 21283969 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 85135868 is about 9226.9099919746. The cubic root of 85135868 is about 439.9171124857.

The spelling of 85135868 in words is "eighty-five million, one hundred thirty-five thousand, eight hundred sixty-eight".