878656 has 14 divisors (see below), whose sum is σ = 1743710. Its totient is φ = 439296.

The previous prime is 878651. The next prime is 878659. The reversal of 878656 is 656878.

878656 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 705600 + 173056 = 840^2 + 416^2 .

It is not an unprimeable number, because it can be changed into a prime (878651) 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 as a sum of consecutive naturals, namely, 6801 + ... + 6928.

2⁸⁷⁸⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

878656 is a deficient number, since it is larger than the sum of its proper divisors (865054).

878656 is a wasteful number, since it uses less digits than its factorization.

878656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13741 (or 13731 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 878656 is about 937.3665238315. The cubic root of 878656 is about 95.7795869182.

The spelling of 878656 in words is "eight hundred seventy-eight thousand, six hundred fifty-six".