873855 has 16 divisors (see below), whose sum is σ = 1553760. Its totient is φ = 465984.

The previous prime is 873787. The next prime is 873863. The reversal of 873855 is 558378.

It is a happy number.

It is not a de Polignac number, because 873855 - 2⁷ = 873727 is a prime.

It is a super-2 number, since 2×873855² = 1527245122050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3102 + ... + 3371.

It is an arithmetic number, because the mean of its divisors is an integer number (97110).

2⁸⁷³⁸⁵⁵ is an apocalyptic number.

873855 is a deficient number, since it is larger than the sum of its proper divisors (679905).

873855 is a wasteful number, since it uses less digits than its factorization.

873855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487 (or 6481 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 873855 is about 934.8021180977. The cubic root of 873855 is about 95.6048208093.

It can be divided in two parts, 873 and 855, that added together give a cube (1728 = 12³).

The spelling of 873855 in words is "eight hundred seventy-three thousand, eight hundred fifty-five".