856679976 has 56 divisors (see below), whose sum is σ = 2408327130. Its totient is φ = 285558048.

The previous prime is 856679939. The next prime is 856679983. The reversal of 856679976 is 679976658.

856679976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 773396100 + 83283876 = 27810^2 + 9126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 67615 + ... + 79278.

Almost surely, 2^856679976 is an apocalyptic number.

It is an amenable number.

856679976 is an abundant number, since it is smaller than the sum of its proper divisors (1551647154).

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

856679976 is a wasteful number, since it uses less digits than its factorization.

856679976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146917 (or 146898 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 856679976 is about 29269.0959204414. The cubic root of 856679976 is about 949.7432273722.

The spelling of 856679976 in words is "eight hundred fifty-six million, six hundred seventy-nine thousand, nine hundred seventy-six".