870918 has 16 divisors (see below), whose sum is σ = 1817856. Its totient is φ = 277640.

The previous prime is 870917. The next prime is 870929. The reversal of 870918 is 819078.

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 870918.

It is not an unprimeable number, because it can be changed into a prime (870911) 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, 3018 + ... + 3293.

It is an arithmetic number, because the mean of its divisors is an integer number (113616).

2⁸⁷⁰⁹¹⁸ is an apocalyptic number.

870918 is an abundant number, since it is smaller than the sum of its proper divisors (946938).

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

870918 is a wasteful number, since it uses less digits than its factorization.

870918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 870918 is about 933.2298752183. The cubic root of 870918 is about 95.4975922933.

The spelling of 870918 in words is "eight hundred seventy thousand, nine hundred eighteen".