85885818 has 32 divisors (see below), whose sum is σ = 179712000. Its totient is φ = 27311856.

The previous prime is 85885799. The next prime is 85885831. The reversal of 85885818 is 81858858.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82143 + ... + 83181.

It is an arithmetic number, because the mean of its divisors is an integer number (5616000).

Almost surely, 2^85885818 is an apocalyptic number.

85885818 is an abundant number, since it is smaller than the sum of its proper divisors (93826182).

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

85885818 is a wasteful number, since it uses less digits than its factorization.

85885818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666.

The product of its digits is 819200, while the sum is 51.

The square root of 85885818 is about 9267.4601698632. The cubic root of 85885818 is about 441.2050609215.

The spelling of 85885818 in words is "eighty-five million, eight hundred eighty-five thousand, eight hundred eighteen".