13845663 has 18 divisors (see below), whose sum is σ = 21658416. Its totient is φ = 8519472.

The previous prime is 13845653. The next prime is 13845679. The reversal of 13845663 is 36654831.

13845663 is a `hidden beast` number, since 13 + 84 + 566 + 3 = 666.

It is not a de Polignac number, because 13845663 - 2⁸ = 13845407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13845653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3031 + ... + 6072.

Almost surely, 2^13845663 is an apocalyptic number.

13845663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13845663 is a deficient number, since it is larger than the sum of its proper divisors (7812753).

13845663 is a wasteful number, since it uses less digits than its factorization.

13845663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135 (or 9119 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 13845663 is about 3720.9760816216. The cubic root of 13845663 is about 240.1252991558.

The spelling of 13845663 in words is "thirteen million, eight hundred forty-five thousand, six hundred sixty-three".