856983066 has 32 divisors (see below), whose sum is σ = 1759133376. Its totient is φ = 278160000.

The previous prime is 856982999. The next prime is 856983067. The reversal of 856983066 is 660389658.

It is not an unprimeable number, because it can be changed into a prime (856983067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137416 + ... + 143516.

It is an arithmetic number, because the mean of its divisors is an integer number (54972918).

Almost surely, 2^856983066 is an apocalyptic number.

856983066 is an abundant number, since it is smaller than the sum of its proper divisors (902150310).

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

856983066 is a wasteful number, since it uses less digits than its factorization.

856983066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6718.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 856983066 is about 29274.2731079697. The cubic root of 856983066 is about 949.8552193030.

The spelling of 856983066 in words is "eight hundred fifty-six million, nine hundred eighty-three thousand, sixty-six".