811085 has 8 divisors (see below), whose sum is σ = 1061856. Its totient is φ = 589840.

The previous prime is 811081. The next prime is 811099. The reversal of 811085 is 580118.

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

It is not a de Polignac number, because 811085 - 2² = 811081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 811085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7319 + ... + 7428.

It is an arithmetic number, because the mean of its divisors is an integer number (132732).

2⁸¹¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

811085 is a deficient number, since it is larger than the sum of its proper divisors (250771).

811085 is a wasteful number, since it uses less digits than its factorization.

811085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14763.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 811085 is about 900.6025760567. The cubic root of 811085 is about 93.2585781795.

The spelling of 811085 in words is "eight hundred eleven thousand, eighty-five".