878655 has 16 divisors (see below), whose sum is σ = 1480320. Its totient is φ = 443808.

The previous prime is 878651. The next prime is 878659. The reversal of 878655 is 556878.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (878651) and next prime (878659).

It is not a de Polignac number, because 878655 - 2² = 878651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (92520).

2⁸⁷⁸⁶⁵⁵ is an apocalyptic number.

878655 is a deficient number, since it is larger than the sum of its proper divisors (601665).

878655 is a wasteful number, since it uses less digits than its factorization.

878655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its digits is 67200, while the sum is 39.

The square root of 878655 is about 937.3659904221. The cubic root of 878655 is about 95.7795505825.

The spelling of 878655 in words is "eight hundred seventy-eight thousand, six hundred fifty-five".