85135812 has 24 divisors (see below), whose sum is σ = 201373536. Its totient is φ = 27989568.

The previous prime is 85135807. The next prime is 85135823. The reversal of 85135812 is 21853158.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47718 + ... + 49469.

It is an arithmetic number, because the mean of its divisors is an integer number (8390564).

Almost surely, 2^85135812 is an apocalyptic number.

It is an amenable number.

85135812 is an abundant number, since it is smaller than the sum of its proper divisors (116237724).

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

85135812 is a wasteful number, since it uses less digits than its factorization.

85135812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97267 (or 97265 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 85135812 is about 9226.9069573720. The cubic root of 85135812 is about 439.9170160307.

It can be divided in two parts, 851 and 35812, that added together give a palindrome (36663).

The spelling of 85135812 in words is "eighty-five million, one hundred thirty-five thousand, eight hundred twelve".