13827691 has 4 divisors (see below), whose sum is σ = 13835952. Its totient is φ = 13819432.

The previous prime is 13827689. The next prime is 13827703. The reversal of 13827691 is 19672831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13827691 - 2¹ = 13827689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13827691.

It is not an unprimeable number, because it can be changed into a prime (13827491) 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, 631 + ... + 5296.

It is an arithmetic number, because the mean of its divisors is an integer number (3458988).

Almost surely, 2^13827691 is an apocalyptic number.

13827691 is a deficient number, since it is larger than the sum of its proper divisors (8261).

13827691 is an equidigital number, since it uses as much as digits as its factorization.

13827691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260.

The product of its digits is 18144, while the sum is 37.

The square root of 13827691 is about 3718.5603397014. The cubic root of 13827691 is about 240.0213580530.

The spelling of 13827691 in words is "thirteen million, eight hundred twenty-seven thousand, six hundred ninety-one".