673209 has 12 divisors (see below), whose sum is σ = 981552. Its totient is φ = 444600.

The previous prime is 673207. The next prime is 673223. The reversal of 673209 is 902376.

673209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673209 - 2¹ = 673207 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673209.

It is not an unprimeable number, because it can be changed into a prime (673201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 894 + ... + 1464.

It is an arithmetic number, because the mean of its divisors is an integer number (81796).

2⁶⁷³²⁰⁹ is an apocalyptic number.

It is an amenable number.

673209 is a deficient number, since it is larger than the sum of its proper divisors (308343).

673209 is a wasteful number, since it uses less digits than its factorization.

673209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 673209 is about 820.4931443955. The cubic root of 673209 is about 87.6428794891.

The spelling of 673209 in words is "six hundred seventy-three thousand, two hundred nine".