11005666 has 16 divisors (see below), whose sum is σ = 18938304. Its totient is φ = 4698864.

The previous prime is 11005649. The next prime is 11005669. The reversal of 11005666 is 66650011.

It is a super-2 number, since 2×11005666² = 242249368207112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11005666.

It is not an unprimeable number, because it can be changed into a prime (11005669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2761 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (1183644).

Almost surely, 2^11005666 is an apocalyptic number.

11005666 is a deficient number, since it is larger than the sum of its proper divisors (7932638).

11005666 is a wasteful number, since it uses less digits than its factorization.

11005666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 11005666 is about 3317.4788620276. The cubic root of 11005666 is about 222.4361875668.

Adding to 11005666 its reverse (66650011), we get a palindrome (77655677).

The spelling of 11005666 in words is "eleven million, five thousand, six hundred sixty-six".