878768456 has 32 divisors (see below), whose sum is σ = 1666942200. Its totient is φ = 434273280.

The previous prime is 878768431. The next prime is 878768477. The reversal of 878768456 is 654867878.

It can be written as a sum of positive squares in 4 ways, for example, as 344696356 + 534072100 = 18566^2 + 23110^2 .

It is a junction number, because it is equal to n+sod(n) for n = 878768395 and 878768404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379430 + ... + 381738.

Almost surely, 2^878768456 is an apocalyptic number.

It is an amenable number.

878768456 is a deficient number, since it is larger than the sum of its proper divisors (788173744).

878768456 is a wasteful number, since it uses less digits than its factorization.

878768456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2845 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 59.

The square root of 878768456 is about 29644.0290109155. The cubic root of 878768456 is about 957.8367290469.

The spelling of 878768456 in words is "eight hundred seventy-eight million, seven hundred sixty-eight thousand, four hundred fifty-six".