13728679 has 2 divisors, whose sum is σ = 13728680. Its totient is φ = 13728678.

The previous prime is 13728661. The next prime is 13728703. The reversal of 13728679 is 97682731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13728679 - 2⁵ = 13728647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13728479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6864339 + 6864340.

It is an arithmetic number, because the mean of its divisors is an integer number (6864340).

Almost surely, 2^13728679 is an apocalyptic number.

13728679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13728679 is an equidigital number, since it uses as much as digits as its factorization.

13728679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 13728679 is about 3705.2232051524. The cubic root of 13728679 is about 239.4471010823.

The spelling of 13728679 in words is "thirteen million, seven hundred twenty-eight thousand, six hundred seventy-nine".