11963666 has 32 divisors (see below), whose sum is σ = 21470400. Its totient is φ = 4927680.

The previous prime is 11963663. The next prime is 11963683. The reversal of 11963666 is 66636911.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11963663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16520 + ... + 17228.

It is an arithmetic number, because the mean of its divisors is an integer number (670950).

Almost surely, 2^11963666 is an apocalyptic number.

11963666 is a deficient number, since it is larger than the sum of its proper divisors (9506734).

11963666 is a wasteful number, since it uses less digits than its factorization.

11963666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 34992, while the sum is 38.

The square root of 11963666 is about 3458.8532781834. The cubic root of 11963666 is about 228.7115479775.

The spelling of 11963666 in words is "eleven million, nine hundred sixty-three thousand, six hundred sixty-six".