13856671 has 2 divisors, whose sum is σ = 13856672. Its totient is φ = 13856670.

The previous prime is 13856657. The next prime is 13856723. The reversal of 13856671 is 17665831.

It is a weak prime.

It is an emirp because it is prime and its reverse (17665831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13856671 - 2⁵ = 13856639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13856671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13856651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6928335 + 6928336.

It is an arithmetic number, because the mean of its divisors is an integer number (6928336).

Almost surely, 2^13856671 is an apocalyptic number.

13856671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13856671 is an equidigital number, since it uses as much as digits as its factorization.

13856671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 13856671 is about 3722.4549695060. The cubic root of 13856671 is about 240.1889195372.

The spelling of 13856671 in words is "thirteen million, eight hundred fifty-six thousand, six hundred seventy-one".