11662666 has 8 divisors (see below), whose sum is σ = 17515620. Its totient is φ = 5824128.

The previous prime is 11662661. The next prime is 11662687. The reversal of 11662666 is 66626611.

It can be written as a sum of positive squares in 2 ways, for example, as 11662225 + 441 = 3415^2 + 21^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11662661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281 + ... + 4996.

Almost surely, 2^11662666 is an apocalyptic number.

11662666 is a deficient number, since it is larger than the sum of its proper divisors (5852954).

11662666 is an equidigital number, since it uses as much as digits as its factorization.

11662666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208.

The product of its digits is 15552, while the sum is 34.

The square root of 11662666 is about 3415.0645674716. The cubic root of 11662666 is about 226.7771428969. Note that the first 3 decimals are identical.

The spelling of 11662666 in words is "eleven million, six hundred sixty-two thousand, six hundred sixty-six".