12997198 has 8 divisors (see below), whose sum is σ = 19514880. Its totient is φ = 6492240.

The previous prime is 12997181. The next prime is 12997207. The reversal of 12997198 is 89179921.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 18 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (2439360).

Almost surely, 2^12997198 is an apocalyptic number.

12997198 is a deficient number, since it is larger than the sum of its proper divisors (6517682).

12997198 is a wasteful number, since it uses less digits than its factorization.

12997198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362.

The product of its digits is 81648, while the sum is 46.

The square root of 12997198 is about 3605.1626870365. The cubic root of 12997198 is about 235.1165741228.

The spelling of 12997198 in words is "twelve million, nine hundred ninety-seven thousand, one hundred ninety-eight".