12997173 has 8 divisors (see below), whose sum is σ = 19805248. Its totient is φ = 7426944.

The previous prime is 12997157. The next prime is 12997181. The reversal of 12997173 is 37179921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12997173 - 2⁴ = 12997157 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 (12997573) 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 7 ways as a sum of consecutive naturals, for example, 309436 + ... + 309477.

It is an arithmetic number, because the mean of its divisors is an integer number (2475656).

Almost surely, 2^12997173 is an apocalyptic number.

It is an amenable number.

12997173 is a deficient number, since it is larger than the sum of its proper divisors (6808075).

12997173 is an equidigital number, since it uses as much as digits as its factorization.

12997173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618923.

The product of its digits is 23814, while the sum is 39.

The square root of 12997173 is about 3605.1592197849. The cubic root of 12997173 is about 235.1164233745.

The spelling of 12997173 in words is "twelve million, nine hundred ninety-seven thousand, one hundred seventy-three".