11809663 has 2 divisors, whose sum is σ = 11809664. Its totient is φ = 11809662.

The previous prime is 11809613. The next prime is 11809669. The reversal of 11809663 is 36690811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11809663 - 2⁹ = 11809151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11809669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5904831 + 5904832.

It is an arithmetic number, because the mean of its divisors is an integer number (5904832).

Almost surely, 2^11809663 is an apocalyptic number.

11809663 is a deficient number, since it is larger than the sum of its proper divisors (1).

11809663 is an equidigital number, since it uses as much as digits as its factorization.

11809663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 11809663 is about 3436.5190236633. The cubic root of 11809663 is about 227.7259390437.

The spelling of 11809663 in words is "eleven million, eight hundred nine thousand, six hundred sixty-three".