673904 has 40 divisors (see below), whose sum is σ = 1630848. Its totient is φ = 262080.

The previous prime is 673891. The next prime is 673921. The reversal of 673904 is 409376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959 + ... + 1505.

2⁶⁷³⁹⁰⁴ 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 673904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815424).

673904 is an abundant number, since it is smaller than the sum of its proper divisors (956944).

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

673904 is a wasteful number, since it uses less digits than its factorization.

673904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 673904 is about 820.9165609244. The cubic root of 673904 is about 87.6730290425.

The spelling of 673904 in words is "six hundred seventy-three thousand, nine hundred four".