674660 has 48 divisors (see below), whose sum is σ = 1666560. Its totient is φ = 224640.

The previous prime is 674647. The next prime is 674669. The reversal of 674660 is 66476.

674660 = 7² + 8² + ... + 126².

It is a super-2 number, since 2×674660² = 910332231200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (674669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8501 + ... + 8579.

It is an arithmetic number, because the mean of its divisors is an integer number (34720).

2⁶⁷⁴⁶⁶⁰ 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 674660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833280).

674660 is an abundant number, since it is smaller than the sum of its proper divisors (991900).

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

674660 is a wasteful number, since it uses less digits than its factorization.

674660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 674660 is about 821.3768927843. The cubic root of 674660 is about 87.7058012871.

The spelling of 674660 in words is "six hundred seventy-four thousand, six hundred sixty".