856674 has 48 divisors (see below), whose sum is σ = 2288832. Its totient is φ = 225504.

The previous prime is 856649. The next prime is 856693. The reversal of 856674 is 476658.

It is a happy number.

It is a d-powerful number, because it can be written as 8⁵ + 5³ + 6 + 6³ + 7⁷ + 4² .

It is a congruent number.

It is an unprimeable number.

856674 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1377 + ... + 1899.

It is an arithmetic number, because the mean of its divisors is an integer number (47684).

2⁸⁵⁶⁶⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144416).

856674 is an abundant number, since it is smaller than the sum of its proper divisors (1432158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856674 is a wasteful number, since it uses less digits than its factorization.

856674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 548 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 856674 is about 925.5668533391. The cubic root of 856674 is about 94.9741018971.

The spelling of 856674 in words is "eight hundred fifty-six thousand, six hundred seventy-four".