11081866 has 4 divisors (see below), whose sum is σ = 16622802. Its totient is φ = 5540932.

The previous prime is 11081843. The next prime is 11081879. The reversal of 11081866 is 66818011.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 8242641 + 2839225 = 2871^2 + 1685^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770465 + ... + 2770468.

Almost surely, 2^11081866 is an apocalyptic number.

11081866 is a deficient number, since it is larger than the sum of its proper divisors (5540936).

11081866 is an equidigital number, since it uses as much as digits as its factorization.

11081866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540935.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 11081866 is about 3328.9436763033. The cubic root of 11081866 is about 222.9483682673.

Adding to 11081866 its reverse (66818011), we get a palindrome (77899877).

The spelling of 11081866 in words is "eleven million, eighty-one thousand, eight hundred sixty-six".