856555716 has 48 divisors (see below), whose sum is σ = 2070230400. Its totient is φ = 275315712.

The previous prime is 856555643. The next prime is 856555747. The reversal of 856555716 is 617555658.

It is a super-3 number, since 3×856555716³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452500 + ... + 454388.

It is an arithmetic number, because the mean of its divisors is an integer number (43129800).

Almost surely, 2^856555716 is an apocalyptic number.

It is an amenable number.

856555716 is an abundant number, since it is smaller than the sum of its proper divisors (1213674684).

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

856555716 is a wasteful number, since it uses less digits than its factorization.

856555716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228 (or 3226 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 48.

The square root of 856555716 is about 29266.9731267174. The cubic root of 856555716 is about 949.6973055954.

The spelling of 856555716 in words is "eight hundred fifty-six million, five hundred fifty-five thousand, seven hundred sixteen".