12816197 has 4 divisors (see below), whose sum is σ = 12880800. Its totient is φ = 12751596.

The previous prime is 12816191. The next prime is 12816211. The reversal of 12816197 is 79161821.

12816197 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12816197 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 (12816191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32003 + ... + 32400.

It is an arithmetic number, because the mean of its divisors is an integer number (3220200).

Almost surely, 2^12816197 is an apocalyptic number.

It is an amenable number.

12816197 is a deficient number, since it is larger than the sum of its proper divisors (64603).

12816197 is an equidigital number, since it uses as much as digits as its factorization.

12816197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64602.

The product of its digits is 6048, while the sum is 35.

The square root of 12816197 is about 3579.9716479324. The cubic root of 12816197 is about 234.0200447922.

The spelling of 12816197 in words is "twelve million, eight hundred sixteen thousand, one hundred ninety-seven".