918856 has 16 divisors (see below), whose sum is σ = 1733040. Its totient is φ = 456720.

The previous prime is 918839. The next prime is 918857. The reversal of 918856 is 658819.

It is not an unprimeable number, because it can be changed into a prime (918857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2475 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (108315).

2⁹¹⁸⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

918856 is a deficient number, since it is larger than the sum of its proper divisors (814184).

918856 is a wasteful number, since it uses less digits than its factorization.

918856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 680 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 918856 is about 958.5697679355. The cubic root of 918856 is about 97.2185527988.

Subtracting from 918856 its sum of digits (37), we obtain a palindrome (918819).

The spelling of 918856 in words is "nine hundred eighteen thousand, eight hundred fifty-six".