673309 has 16 divisors (see below), whose sum is σ = 851200. Its totient is φ = 529200.

The previous prime is 673297. The next prime is 673313. The reversal of 673309 is 903376.

It is not a de Polignac number, because 673309 - 2¹¹ = 671261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4384 + ... + 4534.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2⁶⁷³³⁰⁹ is an apocalyptic number.

It is an amenable number.

673309 is a deficient number, since it is larger than the sum of its proper divisors (177891).

673309 is a wasteful number, since it uses less digits than its factorization.

673309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 673309 is about 820.5540810940. The cubic root of 673309 is about 87.6472188319.

The spelling of 673309 in words is "six hundred seventy-three thousand, three hundred nine".