11808666 has 20 divisors (see below), whose sum is σ = 26460522. Its totient is φ = 3936168.

The previous prime is 11808647. The next prime is 11808689. The reversal of 11808666 is 66680811.

It can be written as a sum of positive squares in only one way, i.e., 11758041 + 50625 = 3429^2 + 225^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11808666.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 36285 + ... + 36608.

Almost surely, 2^11808666 is an apocalyptic number.

11808666 is an abundant number, since it is smaller than the sum of its proper divisors (14651856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11808666 is an equidigital number, since it uses as much as digits as its factorization.

11808666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72907 (or 72898 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 11808666 is about 3436.3739610235. The cubic root of 11808666 is about 227.7195304739.

The spelling of 11808666 in words is "eleven million, eight hundred eight thousand, six hundred sixty-six".