13605671 has 2 divisors, whose sum is σ = 13605672. Its totient is φ = 13605670.

The previous prime is 13605649. The next prime is 13605689. The reversal of 13605671 is 17650631.

It is a strong prime.

It is an emirp because it is prime and its reverse (17650631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13605671 is a prime.

It is a super-2 number, since 2×13605671² = 370228566720482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13605601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802835 + 6802836.

It is an arithmetic number, because the mean of its divisors is an integer number (6802836).

Almost surely, 2^13605671 is an apocalyptic number.

13605671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13605671 is an equidigital number, since it uses as much as digits as its factorization.

13605671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13605671 is about 3688.5865856721. The cubic root of 13605671 is about 238.7298114377.

The spelling of 13605671 in words is "thirteen million, six hundred five thousand, six hundred seventy-one".