11665963 has 2 divisors, whose sum is σ = 11665964. Its totient is φ = 11665962.

The previous prime is 11665937. The next prime is 11666021. The reversal of 11665963 is 36956611.

It is a weak prime.

It is an emirp because it is prime and its reverse (36956611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11665963 - 2⁵ = 11665931 is a prime.

It is not a weakly prime, because it can be changed into another prime (11665903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832981 + 5832982.

It is an arithmetic number, because the mean of its divisors is an integer number (5832982).

Almost surely, 2^11665963 is an apocalyptic number.

11665963 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665963 is an equidigital number, since it uses as much as digits as its factorization.

11665963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 11665963 is about 3415.5472475139. The cubic root of 11665963 is about 226.7985106184.

The spelling of 11665963 in words is "eleven million, six hundred sixty-five thousand, nine hundred sixty-three".