673217320 has 16 divisors (see below), whose sum is σ = 1514739060. Its totient is φ = 269286912.

The previous prime is 673217309. The next prime is 673217327. The reversal of 673217320 is 23712376.

It can be written as a sum of positive squares in 2 ways, for example, as 631717956 + 41499364 = 25134^2 + 6442^2 .

It is not an unprimeable number, because it can be changed into a prime (673217327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8415177 + ... + 8415256.

Almost surely, 2^673217320 is an apocalyptic number.

It is an amenable number.

673217320 is an abundant number, since it is smaller than the sum of its proper divisors (841521740).

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

673217320 is a wasteful number, since it uses less digits than its factorization.

673217320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16830444 (or 16830440 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 673217320 is about 25946.4317392585. The cubic root of 673217320 is about 876.4324053877.

Adding to 673217320 its reverse (23712376), we get a palindrome (696929696).

The spelling of 673217320 in words is "six hundred seventy-three million, two hundred seventeen thousand, three hundred twenty".