673720 has 16 divisors (see below), whose sum is σ = 1515960. Its totient is φ = 269472.

The previous prime is 673669. The next prime is 673747. The reversal of 673720 is 27376.

673720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8382 + ... + 8461.

2⁶⁷³⁷²⁰ is an apocalyptic number.

It is an amenable number.

673720 is an abundant number, since it is smaller than the sum of its proper divisors (842240).

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

673720 is a wasteful number, since it uses less digits than its factorization.

673720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16854 (or 16850 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 673720 is about 820.8044834186. The cubic root of 673720 is about 87.6650490207.

The spelling of 673720 in words is "six hundred seventy-three thousand, seven hundred twenty".