674909 has 4 divisors (see below), whose sum is σ = 677280. Its totient is φ = 672540.

The previous prime is 674903. The next prime is 674929. The reversal of 674909 is 909476.

It is a happy number.

674909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 674909 - 2¹⁶ = 609373 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (169320).

2⁶⁷⁴⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

674909 is a deficient number, since it is larger than the sum of its proper divisors (2371).

674909 is a wasteful number, since it uses less digits than its factorization.

674909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 674909 is about 821.5284535547. The cubic root of 674909 is about 87.7165899601.

The spelling of 674909 in words is "six hundred seventy-four thousand, nine hundred nine".