673326 has 32 divisors (see below), whose sum is σ = 1541280. Its totient is φ = 217728.

The previous prime is 673313. The next prime is 673327. The reversal of 673326 is 623376.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 673326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673327) by changing a digit.

673326 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (48165).

2⁶⁷³³²⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770640).

673326 is an abundant number, since it is smaller than the sum of its proper divisors (867954).

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

673326 is a wasteful number, since it uses less digits than its factorization.

673326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 673326 is about 820.5644398827. The cubic root of 673326 is about 87.6479564775.

It can be divided in two parts, 673 and 326, that added together give a palindrome (999).

The spelling of 673326 in words is "six hundred seventy-three thousand, three hundred twenty-six".