85618404 has 96 divisors (see below), whose sum is σ = 232243200. Its totient is φ = 27246240.

The previous prime is 85618399. The next prime is 85618417. The reversal of 85618404 is 40481658.

It is a super-2 number, since 2×85618404² = 14661022207014432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358117 + ... + 358355.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^85618404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85618404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

85618404 is an abundant number, since it is smaller than the sum of its proper divisors (146624796).

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

85618404 is a wasteful number, since it uses less digits than its factorization.

85618404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 85618404 is about 9253.0213444042. The cubic root of 85618404 is about 440.7466729625.

The spelling of 85618404 in words is "eighty-five million, six hundred eighteen thousand, four hundred four".