879985 has 16 divisors (see below), whose sum is σ = 1137600. Its totient is φ = 651456.

The previous prime is 879979. The next prime is 880001. The reversal of 879985 is 589978.

It is a cyclic number.

It is not a de Polignac number, because 879985 - 2⁵ = 879953 is a prime.

Its product of digits (181440) is a multiple of the sum of its prime divisors (240).

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, 5527 + ... + 5683.

It is an arithmetic number, because the mean of its divisors is an integer number (71100).

2⁸⁷⁹⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

879985 is a deficient number, since it is larger than the sum of its proper divisors (257615).

879985 is a wasteful number, since it uses less digits than its factorization.

879985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its digits is 181440, while the sum is 46.

The square root of 879985 is about 938.0751569038. The cubic root of 879985 is about 95.8278526586.

The spelling of 879985 in words is "eight hundred seventy-nine thousand, nine hundred eighty-five".