856774 has 8 divisors (see below), whose sum is σ = 1294128. Its totient is φ = 425400.

The previous prime is 856759. The next prime is 856787. The reversal of 856774 is 477658.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1117 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (161766).

2⁸⁵⁶⁷⁷⁴ is an apocalyptic number.

856774 is a deficient number, since it is larger than the sum of its proper divisors (437354).

856774 is a wasteful number, since it uses less digits than its factorization.

856774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its digits is 47040, while the sum is 37.

The square root of 856774 is about 925.6208727119. The cubic root of 856774 is about 94.9777972121.

It can be divided in two parts, 85 and 6774, that added together give a cube (6859 = 19³).

The spelling of 856774 in words is "eight hundred fifty-six thousand, seven hundred seventy-four".