856079 has 6 divisors (see below), whose sum is σ = 995904. Its totient is φ = 733740.

The previous prime is 856073. The next prime is 856081. The reversal of 856079 is 970658.

It is a de Polignac number, because none of the positive numbers 2^k-856079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8687 + ... + 8784.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

2⁸⁵⁶⁰⁷⁹ is an apocalyptic number.

856079 is a deficient number, since it is larger than the sum of its proper divisors (139825).

856079 is a wasteful number, since it uses less digits than its factorization.

856079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17485 (or 17478 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 856079 is about 925.2453728606. The cubic root of 856079 is about 94.9521088253.

The spelling of 856079 in words is "eight hundred fifty-six thousand, seventy-nine".