673191 has 10 divisors (see below), whose sum is σ = 1005752. Its totient is φ = 448740.

The previous prime is 673157. The next prime is 673193. The reversal of 673191 is 191376.

673191 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 673191 - 2⁷ = 673063 is a prime.

It is a super-2 number, since 2×673191² = 906372244962, which contains 22 as substring.

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

It is a Duffinian number.

673191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673193) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4075 + ... + 4236.

2⁶⁷³¹⁹¹ is an apocalyptic number.

673191 is a deficient number, since it is larger than the sum of its proper divisors (332561).

673191 is an equidigital number, since it uses as much as digits as its factorization.

673191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8314 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 673191 is about 820.4821753091. The cubic root of 673191 is about 87.6420983617.

The spelling of 673191 in words is "six hundred seventy-three thousand, one hundred ninety-one".