856887688 has 32 divisors (see below), whose sum is σ = 1701403200. Its totient is φ = 403451712.

The previous prime is 856887683. The next prime is 856887697. The reversal of 856887688 is 886788658.

It is not an unprimeable number, because it can be changed into a prime (856887683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8506 + ... + 42262.

It is an arithmetic number, because the mean of its divisors is an integer number (53168850).

Almost surely, 2^856887688 is an apocalyptic number.

It is an amenable number.

856887688 is a deficient number, since it is larger than the sum of its proper divisors (844515512).

856887688 is a wasteful number, since it uses less digits than its factorization.

856887688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33949 (or 33945 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 64.

The square root of 856887688 is about 29272.6440213384. The cubic root of 856887688 is about 949.8199799244.

The spelling of 856887688 in words is "eight hundred fifty-six million, eight hundred eighty-seven thousand, six hundred eighty-eight".