13644671 has 2 divisors, whose sum is σ = 13644672. Its totient is φ = 13644670.

The previous prime is 13644667. The next prime is 13644689. The reversal of 13644671 is 17644631.

It is a weak prime.

It is an emirp because it is prime and its reverse (17644631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13644671 - 2² = 13644667 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13644571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822335 + 6822336.

It is an arithmetic number, because the mean of its divisors is an integer number (6822336).

Almost surely, 2^13644671 is an apocalyptic number.

13644671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13644671 is an equidigital number, since it uses as much as digits as its factorization.

13644671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 13644671 is about 3693.8693804735. The cubic root of 13644671 is about 238.9576963343.

The spelling of 13644671 in words is "thirteen million, six hundred forty-four thousand, six hundred seventy-one".