11644666 has 16 divisors (see below), whose sum is σ = 19167840. Its totient is φ = 5261680.

The previous prime is 11644637. The next prime is 11644691. The reversal of 11644666 is 66644611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2460 + ... + 5416.

It is an arithmetic number, because the mean of its divisors is an integer number (1197990).

Almost surely, 2^11644666 is an apocalyptic number.

11644666 is a deficient number, since it is larger than the sum of its proper divisors (7523174).

11644666 is a wasteful number, since it uses less digits than its factorization.

11644666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149.

The product of its digits is 20736, while the sum is 34.

The square root of 11644666 is about 3412.4281677421. The cubic root of 11644666 is about 226.6604145719.

Subtracting 11644666 from its reverse (66644611), we obtain a palindrome (54999945).

The spelling of 11644666 in words is "eleven million, six hundred forty-four thousand, six hundred sixty-six".