815085 has 24 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 425952.

The previous prime is 815063. The next prime is 815123. The reversal of 815085 is 580518.

It is not a de Polignac number, because 815085 - 2⁵ = 815053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2502 + ... + 2808.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2⁸¹⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

815085 is a deficient number, since it is larger than the sum of its proper divisors (626355).

815085 is a wasteful number, since it uses less digits than its factorization.

815085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 815085 is about 902.8205801819. The cubic root of 815085 is about 93.4116335562.

The spelling of 815085 in words is "eight hundred fifteen thousand, eighty-five".