856683 has 8 divisors (see below), whose sum is σ = 1269200. Its totient is φ = 571104.

The previous prime is 856649. The next prime is 856693. The reversal of 856683 is 386658.

856683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 856683 - 2¹⁴ = 840299 is a prime.

It is a Duffinian number.

856683 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (856693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15838 + ... + 15891.

It is an arithmetic number, because the mean of its divisors is an integer number (158650).

2⁸⁵⁶⁶⁸³ is an apocalyptic number.

856683 is a deficient number, since it is larger than the sum of its proper divisors (412517).

856683 is a wasteful number, since it uses less digits than its factorization.

856683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31738 (or 31732 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 856683 is about 925.5717152117. The cubic root of 856683 is about 94.9744344872.

It can be divided in two parts, 8566 and 83, that added together give a square (8649 = 93²).

The spelling of 856683 in words is "eight hundred fifty-six thousand, six hundred eighty-three".