674856 has 96 divisors (see below), whose sum is σ = 2271360. Its totient is φ = 176256.

The previous prime is 674851. The next prime is 674857. The reversal of 674856 is 658476.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

Its product of digits (40320) is a multiple of the sum of its prime divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 674856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674851) by changing a digit.

674856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6501 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (23660).

2⁶⁷⁴⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1135680).

674856 is an abundant number, since it is smaller than the sum of its proper divisors (1596504).

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

674856 is a wasteful number, since it uses less digits than its factorization.

674856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 128 counting only the distinct ones).

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

The square root of 674856 is about 821.4961959742. The cubic root of 674856 is about 87.7142937982.

The spelling of 674856 in words is "six hundred seventy-four thousand, eight hundred fifty-six".