856385074 has 16 divisors (see below), whose sum is σ = 1296755928. Its totient is φ = 424150272.

The previous prime is 856385069. The next prime is 856385083. The reversal of 856385074 is 470583658.

It can be written as a sum of positive squares in 4 ways, for example, as 542563849 + 313821225 = 23293^2 + 17715^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101772 + ... + 109864.

Almost surely, 2^856385074 is an apocalyptic number.

856385074 is a deficient number, since it is larger than the sum of its proper divisors (440370854).

856385074 is a wasteful number, since it uses less digits than its factorization.

856385074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 856385074 is about 29264.0577159081. The cubic root of 856385074 is about 949.6342355552.

The spelling of 856385074 in words is "eight hundred fifty-six million, three hundred eighty-five thousand, seventy-four".