673671197 has 4 divisors (see below), whose sum is σ = 675477660. Its totient is φ = 671864736.

The previous prime is 673671179. The next prime is 673671203. The reversal of 673671197 is 791176376.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411846436 + 261824761 = 20294^2 + 16181^2 .

It is a cyclic number.

It is not a de Polignac number, because 673671197 - 2¹⁸ = 673409053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673671107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902672 + ... + 903417.

It is an arithmetic number, because the mean of its divisors is an integer number (168869415).

Almost surely, 2^673671197 is an apocalyptic number.

It is an amenable number.

673671197 is a deficient number, since it is larger than the sum of its proper divisors (1806463).

673671197 is a wasteful number, since it uses less digits than its factorization.

673671197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806462.

The product of its digits is 333396, while the sum is 47.

The square root of 673671197 is about 25955.1766898243. The cubic root of 673671197 is about 876.6293220625.

The spelling of 673671197 in words is "six hundred seventy-three million, six hundred seventy-one thousand, one hundred ninety-seven".