673531173 has 16 divisors (see below), whose sum is σ = 1140370560. Its totient is φ = 384874848.

The previous prime is 673531153. The next prime is 673531181. The reversal of 673531173 is 371135376.

It is a happy number.

It is not a de Polignac number, because 673531173 - 2¹² = 673527077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673531123) 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 15 ways as a sum of consecutive naturals, for example, 1781640 + ... + 1782017.

It is an arithmetic number, because the mean of its divisors is an integer number (71273160).

Almost surely, 2^673531173 is an apocalyptic number.

673531173 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

673531173 is a deficient number, since it is larger than the sum of its proper divisors (466839387).

673531173 is a wasteful number, since it uses less digits than its factorization.

673531173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563673 (or 3563667 counting only the distinct ones).

The product of its digits is 39690, while the sum is 36.

The square root of 673531173 is about 25952.4791301332. The cubic root of 673531173 is about 876.5685814271.

The spelling of 673531173 in words is "six hundred seventy-three million, five hundred thirty-one thousand, one hundred seventy-three".