13689727 has 4 divisors (see below), whose sum is σ = 13759416. Its totient is φ = 13620040.

The previous prime is 13689721. The next prime is 13689733. The reversal of 13689727 is 72798631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13689721) and next prime (13689733).

It is a cyclic number.

It is not a de Polignac number, because 13689727 - 2³ = 13689719 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 (13689721) 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, 34549 + ... + 34942.

It is an arithmetic number, because the mean of its divisors is an integer number (3439854).

Almost surely, 2^13689727 is an apocalyptic number.

13689727 is a deficient number, since it is larger than the sum of its proper divisors (69689).

13689727 is an equidigital number, since it uses as much as digits as its factorization.

13689727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69688.

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

The square root of 13689727 is about 3699.9631079242. The cubic root of 13689727 is about 239.2204276969.

The spelling of 13689727 in words is "thirteen million, six hundred eighty-nine thousand, seven hundred twenty-seven".