856081316 has 6 divisors (see below), whose sum is σ = 1498142310. Its totient is φ = 428040656.

The previous prime is 856081297. The next prime is 856081319. The reversal of 856081316 is 613180658.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 797497600 + 58583716 = 28240^2 + 7654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 856081316.

It is not an unprimeable number, because it can be changed into a prime (856081319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107010161 + ... + 107010168.

It is an arithmetic number, because the mean of its divisors is an integer number (249690385).

Almost surely, 2^856081316 is an apocalyptic number.

It is an amenable number.

856081316 is a deficient number, since it is larger than the sum of its proper divisors (642060994).

856081316 is a wasteful number, since it uses less digits than its factorization.

856081316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214020333 (or 214020331 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 856081316 is about 29258.8673054854. The cubic root of 856081316 is about 949.5219445166.

The spelling of 856081316 in words is "eight hundred fifty-six million, eighty-one thousand, three hundred sixteen".