855918 has 24 divisors (see below), whose sum is σ = 2119728. Its totient is φ = 244512.

The previous prime is 855901. The next prime is 855919. The reversal of 855918 is 819558.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 855918.

It is not an unprimeable number, because it can be changed into a prime (855919) by changing a digit.

855918 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3271 + ... + 3522.

It is an arithmetic number, because the mean of its divisors is an integer number (88322).

2⁸⁵⁵⁹¹⁸ is an apocalyptic number.

855918 is an abundant number, since it is smaller than the sum of its proper divisors (1263810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855918 is a wasteful number, since it uses less digits than its factorization.

855918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6808 (or 6805 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 855918 is about 925.1583648219. The cubic root of 855918 is about 94.9461560071.

The spelling of 855918 in words is "eight hundred fifty-five thousand, nine hundred eighteen".