878806656 has 384 divisors, whose sum is σ = 3181127040. Its totient is φ = 226713600.

The previous prime is 878806637. The next prime is 878806673. The reversal of 878806656 is 656608878.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×878806656² = 1544602277259804672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8701006 + ... + 8701106.

It is an arithmetic number, because the mean of its divisors is an integer number (8284185).

Almost surely, 2^878806656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878806656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590563520).

878806656 is an abundant number, since it is smaller than the sum of its proper divisors (2302320384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

878806656 is a wasteful number, since it uses less digits than its factorization.

878806656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The square root of 878806656 is about 29644.6733157915. The cubic root of 878806656 is about 957.8506078765.

The spelling of 878806656 in words is "eight hundred seventy-eight million, eight hundred six thousand, six hundred fifty-six".