12686198 has 16 divisors (see below), whose sum is σ = 22192800. Its totient is φ = 5436648.

The previous prime is 12686197. The next prime is 12686207. The reversal of 12686198 is 89168621.

12686198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8561 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (1387050).

Almost surely, 2^12686198 is an apocalyptic number.

12686198 is a deficient number, since it is larger than the sum of its proper divisors (9506602).

12686198 is an equidigital number, since it uses as much as digits as its factorization.

12686198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18516 (or 18502 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 12686198 is about 3561.7689425340. The cubic root of 12686198 is about 233.2261062875.

The spelling of 12686198 in words is "twelve million, six hundred eighty-six thousand, one hundred ninety-eight".