674658 has 24 divisors (see below), whose sum is σ = 1502748. Its totient is φ = 218592.

The previous prime is 674647. The next prime is 674669. The reversal of 674658 is 856476.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (674647) and next prime (674669).

It can be written as a sum of positive squares in 2 ways, for example, as 660969 + 13689 = 813^2 + 117^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 674658.

It is an unprimeable number.

674658 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 11 ways as a sum of consecutive naturals, for example, 160 + ... + 1172.

2⁶⁷⁴⁶⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751374).

674658 is an abundant number, since it is smaller than the sum of its proper divisors (828090).

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

674658 is a wasteful number, since it uses less digits than its factorization.

674658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1055 counting only the distinct ones).

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

The square root of 674658 is about 821.3756753155. The cubic root of 674658 is about 87.7057146204.

The spelling of 674658 in words is "six hundred seventy-four thousand, six hundred fifty-eight".