11863663 has 4 divisors (see below), whose sum is σ = 13558480. Its totient is φ = 10168848.

The previous prime is 11863651. The next prime is 11863681. The reversal of 11863663 is 36636811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36636811 = 353 ⋅103787.

It is a cyclic number.

It is not a de Polignac number, because 11863663 - 2⁹ = 11863151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11863613) 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 3 ways as a sum of consecutive naturals, for example, 847398 + ... + 847411.

It is an arithmetic number, because the mean of its divisors is an integer number (3389620).

Almost surely, 2^11863663 is an apocalyptic number.

11863663 is a deficient number, since it is larger than the sum of its proper divisors (1694817).

11863663 is an equidigital number, since it uses as much as digits as its factorization.

11863663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694816.

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

The square root of 11863663 is about 3444.3668503805. The cubic root of 11863663 is about 228.0725056670.

The spelling of 11863663 in words is "eleven million, eight hundred sixty-three thousand, six hundred sixty-three".