13727641 has 4 divisors (see below), whose sum is σ = 13745872. Its totient is φ = 13709412.

The previous prime is 13727639. The next prime is 13727647. The reversal of 13727641 is 14672731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13727641 - 2¹ = 13727639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13727647) 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, 7935 + ... + 9508.

It is an arithmetic number, because the mean of its divisors is an integer number (3436468).

Almost surely, 2^13727641 is an apocalyptic number.

It is an amenable number.

13727641 is a deficient number, since it is larger than the sum of its proper divisors (18231).

13727641 is an equidigital number, since it uses as much as digits as its factorization.

13727641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18230.

The product of its digits is 7056, while the sum is 31.

The square root of 13727641 is about 3705.0831299716. The cubic root of 13727641 is about 239.4410662129.

The spelling of 13727641 in words is "thirteen million, seven hundred twenty-seven thousand, six hundred forty-one".