856308674 has 8 divisors (see below), whose sum is σ = 1383267900. Its totient is φ = 395219376.

The previous prime is 856308671. The next prime is 856308679. The reversal of 856308674 is 476803658.

It can be written as a sum of positive squares in 2 ways, for example, as 855153049 + 1155625 = 29243^2 + 1075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (856308671) 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, 16467449 + ... + 16467500.

Almost surely, 2^856308674 is an apocalyptic number.

856308674 is a deficient number, since it is larger than the sum of its proper divisors (526959226).

856308674 is a wasteful number, since it uses less digits than its factorization.

856308674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32934964.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 856308674 is about 29262.7523312487. The cubic root of 856308674 is about 949.6059950609.

The spelling of 856308674 in words is "eight hundred fifty-six million, three hundred eight thousand, six hundred seventy-four".