878085 has 48 divisors (see below), whose sum is σ = 1747200. Its totient is φ = 404352.

The previous prime is 878083. The next prime is 878089. The reversal of 878085 is 580878.

It is not a de Polignac number, because 878085 - 2¹ = 878083 is a prime.

It is a Curzon number.

878085 is a lucky number.

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 878085.

It is not an unprimeable number, because it can be changed into a prime (878083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11076 + ... + 11154.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

2⁸⁷⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

878085 is a deficient number, since it is larger than the sum of its proper divisors (869115).

878085 is a wasteful number, since it uses less digits than its factorization.

878085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 878085 is about 937.0618976354. The cubic root of 878085 is about 95.7588347712.

The spelling of 878085 in words is "eight hundred seventy-eight thousand, eighty-five".