856377688 has 16 divisors (see below), whose sum is σ = 1606581360. Its totient is φ = 427956000.

The previous prime is 856377679. The next prime is 856377689. The reversal of 856377688 is 886773658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856377689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12948 + ... + 43363.

It is an arithmetic number, because the mean of its divisors is an integer number (100411335).

Almost surely, 2^856377688 is an apocalyptic number.

It is an amenable number.

856377688 is a deficient number, since it is larger than the sum of its proper divisors (750203672).

856377688 is a wasteful number, since it uses less digits than its factorization.

856377688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58218 (or 58214 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The square root of 856377688 is about 29263.9315198761. The cubic root of 856377688 is about 949.6315054676.

The spelling of 856377688 in words is "eight hundred fifty-six million, three hundred seventy-seven thousand, six hundred eighty-eight".