856876056976 has 15 divisors (see below), whose sum is σ = 1660204534411. Its totient is φ = 428436177136.

The previous prime is 856876056917. The next prime is 856876057007. The reversal of 856876056976 is 679650678658.

The square root of 856876056976 is 925676.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 856876056899 and 856876056908.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3586995 + ... + 3818413.

Almost surely, 2^856876056976 is an apocalyptic number.

856876056976 is the 925676-th square number.

It is an amenable number.

856876056976 is a deficient number, since it is larger than the sum of its proper divisors (803328477435).

856876056976 is an frugal number, since it uses more digits than its factorization.

856876056976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462846 (or 231421 counting only the distinct ones).

The product of its (nonzero) digits is 914457600, while the sum is 73.

The spelling of 856876056976 in words is "eight hundred fifty-six billion, eight hundred seventy-six million, fifty-six thousand, nine hundred seventy-six".