85415818 has 8 divisors (see below), whose sum is σ = 128267712. Its totient is φ = 42659916.

The previous prime is 85415797. The next prime is 85415831. The reversal of 85415818 is 81851458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21730 + ... + 25357.

It is an arithmetic number, because the mean of its divisors is an integer number (16033464).

Almost surely, 2^85415818 is an apocalyptic number.

85415818 is a deficient number, since it is larger than the sum of its proper divisors (42851894).

85415818 is a wasteful number, since it uses less digits than its factorization.

85415818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47996.

The product of its digits is 51200, while the sum is 40.

The square root of 85415818 is about 9242.0678422093. The cubic root of 85415818 is about 440.3987741548.

The spelling of 85415818 in words is "eighty-five million, four hundred fifteen thousand, eight hundred eighteen".