11166655 has 4 divisors (see below), whose sum is σ = 13399992. Its totient is φ = 8933320.

The previous prime is 11166643. The next prime is 11166679. The reversal of 11166655 is 55666111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11166655 - 2⁹ = 11166143 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116661 + ... + 1116670.

It is an arithmetic number, because the mean of its divisors is an integer number (3349998).

Almost surely, 2^11166655 is an apocalyptic number.

11166655 is a deficient number, since it is larger than the sum of its proper divisors (2233337).

11166655 is an equidigital number, since it uses as much as digits as its factorization.

11166655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233336.

The product of its digits is 5400, while the sum is 31.

The square root of 11166655 is about 3341.6545303188. The cubic root of 11166655 is about 223.5155279180.

It can be divided in two parts, 111 and 66655, that added together give a palindrome (66766).

The spelling of 11166655 in words is "eleven million, one hundred sixty-six thousand, six hundred fifty-five".