856968740 has 24 divisors (see below), whose sum is σ = 1800211392. Its totient is φ = 342677600.

The previous prime is 856968737. The next prime is 856968769. The reversal of 856968740 is 47869658.

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, 91265 + ... + 100215.

It is an arithmetic number, because the mean of its divisors is an integer number (75008808).

Almost surely, 2^856968740 is an apocalyptic number.

It is an amenable number.

856968740 is an abundant number, since it is smaller than the sum of its proper divisors (943242652).

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

856968740 is a wasteful number, since it uses less digits than its factorization.

856968740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747 (or 13745 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 856968740 is about 29274.0284211108. The cubic root of 856968740 is about 949.8499264323.

The spelling of 856968740 in words is "eight hundred fifty-six million, nine hundred sixty-eight thousand, seven hundred forty".