11663863 has 2 divisors, whose sum is σ = 11663864. Its totient is φ = 11663862.

The previous prime is 11663857. The next prime is 11663893. The reversal of 11663863 is 36836611.

It is a happy number.

11663863 is nontrivially palindromic in base 14.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11663863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11663893) 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, 5831931 + 5831932.

It is an arithmetic number, because the mean of its divisors is an integer number (5831932).

Almost surely, 2^11663863 is an apocalyptic number.

11663863 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663863 is an equidigital number, since it uses as much as digits as its factorization.

11663863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 11663863 is about 3415.2398158841. The cubic root of 11663863 is about 226.7849010703.

The spelling of 11663863 in words is "eleven million, six hundred sixty-three thousand, eight hundred sixty-three".