13611863 has 2 divisors, whose sum is σ = 13611864. Its totient is φ = 13611862.

The previous prime is 13611859. The next prime is 13611869. The reversal of 13611863 is 36811631.

It is a weak prime.

It is an emirp because it is prime and its reverse (36811631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13611863 - 2² = 13611859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13611869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805931 + 6805932.

It is an arithmetic number, because the mean of its divisors is an integer number (6805932).

Almost surely, 2^13611863 is an apocalyptic number.

13611863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13611863 is an equidigital number, since it uses as much as digits as its factorization.

13611863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 13611863 is about 3689.4258360889. The cubic root of 13611863 is about 238.7660216033.

The spelling of 13611863 in words is "thirteen million, six hundred eleven thousand, eight hundred sixty-three".