85807158 has 32 divisors (see below), whose sum is σ = 179663616. Its totient is φ = 27269088.

The previous prime is 85807153. The next prime is 85807171. The reversal of 85807158 is 85170858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85807153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50641 + ... + 52307.

It is an arithmetic number, because the mean of its divisors is an integer number (5614488).

Almost surely, 2^85807158 is an apocalyptic number.

85807158 is an abundant number, since it is smaller than the sum of its proper divisors (93856458).

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

85807158 is a wasteful number, since it uses less digits than its factorization.

85807158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 85807158 is about 9263.2153165086. The cubic root of 85807158 is about 441.0703247047.

The spelling of 85807158 in words is "eighty-five million, eight hundred seven thousand, one hundred fifty-eight".