856708 has 6 divisors (see below), whose sum is σ = 1499246. Its totient is φ = 428352.

The previous prime is 856703. The next prime is 856711. The reversal of 856708 is 807658.

It can be written as a sum of positive squares in only one way, i.e., 831744 + 24964 = 912^2 + 158^2 .

It is not an unprimeable number, because it can be changed into a prime (856703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107085 + ... + 107092.

2⁸⁵⁶⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

856708 is a deficient number, since it is larger than the sum of its proper divisors (642538).

856708 is a wasteful number, since it uses less digits than its factorization.

856708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214181 (or 214179 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 856708 is about 925.5852202796. The cubic root of 856708 is about 94.9753583365.

The spelling of 856708 in words is "eight hundred fifty-six thousand, seven hundred eight".