674256 has 40 divisors (see below), whose sum is σ = 1901664. Its totient is φ = 204160.

The previous prime is 674249. The next prime is 674263. The reversal of 674256 is 652476.

It is an interprime number because it is at equal distance from previous prime (674249) and next prime (674263).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

674256 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 7 ways as a sum of consecutive naturals, for example, 111 + ... + 1166.

2⁶⁷⁴²⁵⁶ is an apocalyptic number.

674256 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950832).

674256 is an abundant number, since it is smaller than the sum of its proper divisors (1227408).

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

674256 is a wasteful number, since it uses less digits than its factorization.

674256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299 (or 1293 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 674256 is about 821.1309274409. The cubic root of 674256 is about 87.6882911246.

It can be divided in two parts, 67425 and 6, that multiplied together give a triangular number (404550 = T₈₉₉).

The spelling of 674256 in words is "six hundred seventy-four thousand, two hundred fifty-six".