674445 has 8 divisors (see below), whose sum is σ = 1079136. Its totient is φ = 359696.

The previous prime is 674431. The next prime is 674449. The reversal of 674445 is 544476.

674445 = 185² + 186² + ... + 202².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 674445 - 2⁸ = 674189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 674445.

It is not an unprimeable number, because it can be changed into a prime (674449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22467 + ... + 22496.

It is an arithmetic number, because the mean of its divisors is an integer number (134892).

2⁶⁷⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

674445 is a deficient number, since it is larger than the sum of its proper divisors (404691).

674445 is a wasteful number, since it uses less digits than its factorization.

674445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44971.

The product of its digits is 13440, while the sum is 30.

The square root of 674445 is about 821.2460045565. The cubic root of 674445 is about 87.6964836305.

The spelling of 674445 in words is "six hundred seventy-four thousand, four hundred forty-five".