674409 has 8 divisors (see below), whose sum is σ = 921312. Its totient is φ = 438560.

The previous prime is 674393. The next prime is 674419. The reversal of 674409 is 904476.

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 674409 - 2⁴ = 674393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (674419) 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, 2619 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (115164).

2⁶⁷⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

674409 is a deficient number, since it is larger than the sum of its proper divisors (246903).

674409 is a wasteful number, since it uses less digits than its factorization.

674409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 674409 is about 821.2240863492. The cubic root of 674409 is about 87.6949232712.

The spelling of 674409 in words is "six hundred seventy-four thousand, four hundred nine".