12998686 has 8 divisors (see below), whose sum is σ = 19677240. Its totient is φ = 6439608.

The previous prime is 12998683. The next prime is 12998707. The reversal of 12998686 is 68689921.

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 not an unprimeable number, because it can be changed into a prime (12998683) 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 3 ways as a sum of consecutive naturals, for example, 29596 + ... + 30031.

It is an arithmetic number, because the mean of its divisors is an integer number (2459655).

Almost surely, 2^12998686 is an apocalyptic number.

12998686 is a deficient number, since it is larger than the sum of its proper divisors (6678554).

12998686 is a wasteful number, since it uses less digits than its factorization.

12998686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59738.

The product of its digits is 373248, while the sum is 49.

The square root of 12998686 is about 3605.3690518448. The cubic root of 12998686 is about 235.1255463160.

The spelling of 12998686 in words is "twelve million, nine hundred ninety-eight thousand, six hundred eighty-six".