856396 has 12 divisors (see below), whose sum is σ = 1505448. Its totient is φ = 426272.

The previous prime is 856393. The next prime is 856411. The reversal of 856396 is 693658.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (856391) 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, 1080 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (125454).

2⁸⁵⁶³⁹⁶ is an apocalyptic number.

It is an amenable number.

856396 is a deficient number, since it is larger than the sum of its proper divisors (649052).

856396 is a wasteful number, since it uses less digits than its factorization.

856396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 966 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 856396 is about 925.4166629146. The cubic root of 856396 is about 94.9638274104.

The spelling of 856396 in words is "eight hundred fifty-six thousand, three hundred ninety-six".