673216 has 28 divisors (see below), whose sum is σ = 1364488. Its totient is φ = 329472.

The previous prime is 673207. The next prime is 673223. The reversal of 673216 is 612376.

673216 is nontrivially palindromic in base 5.

It is an Ulam number.

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 3 ways as a sum of consecutive naturals, for example, 4210 + ... + 4366.

2⁶⁷³²¹⁶ 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 673216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682244).

673216 is an abundant number, since it is smaller than the sum of its proper divisors (691272).

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

673216 is a wasteful number, since it uses less digits than its factorization.

673216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 673216 is about 820.4974101117. The cubic root of 673216 is about 87.6431832570.

The spelling of 673216 in words is "six hundred seventy-three thousand, two hundred sixteen".