856885616 has 20 divisors (see below), whose sum is σ = 1676656824. Its totient is φ = 424200000.

The previous prime is 856885613. The next prime is 856885651. The reversal of 856885616 is 616588658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856885613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263510 + ... + 266741.

Almost surely, 2^856885616 is an apocalyptic number.

It is an amenable number.

856885616 is a deficient number, since it is larger than the sum of its proper divisors (819771208).

856885616 is a wasteful number, since it uses less digits than its factorization.

856885616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530360 (or 530354 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 53.

The square root of 856885616 is about 29272.6086299120. The cubic root of 856885616 is about 949.8192143520.

The spelling of 856885616 in words is "eight hundred fifty-six million, eight hundred eighty-five thousand, six hundred sixteen".