855085 has 16 divisors (see below), whose sum is σ = 1279872. Its totient is φ = 532800.

The previous prime is 855079. The next prime is 855089. The reversal of 855085 is 580558.

855085 = 33² + 34² + ... + 137².

It is a happy number.

It is not a de Polignac number, because 855085 - 2⁷ = 854957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (79992).

2⁸⁵⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

855085 is a deficient number, since it is larger than the sum of its proper divisors (424787).

855085 is a wasteful number, since it uses less digits than its factorization.

855085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 855085 is about 924.7080620390. The cubic root of 855085 is about 94.9153447147.

The spelling of 855085 in words is "eight hundred fifty-five thousand, eighty-five".