11666666 has 8 divisors (see below), whose sum is σ = 19090944. Its totient is φ = 5303020.

The previous prime is 11666663. The next prime is 11666689. The reversal of 11666666 is 66666611.

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

It is a super-2 number, since 2×11666666² = 272222191111112, which contains 22 as substring.

11666666 is a modest number, since divided by 6666 gives 1166 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11666663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265130 + ... + 265173.

It is an arithmetic number, because the mean of its divisors is an integer number (2386368).

Almost surely, 2^11666666 is an apocalyptic number.

11666666 is a deficient number, since it is larger than the sum of its proper divisors (7424278).

11666666 is a wasteful number, since it uses less digits than its factorization.

11666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530316.

The product of its digits is 46656, while the sum is 38.

The square root of 11666666 is about 3415.6501577299. The cubic root of 11666666 is about 226.8030662117.

Subtracting 11666666 from its reverse (66666611), we obtain a palindrome (54999945).

It can be divided in two parts, 1166666 and 6, that multiplied together give a palindrome (6999996).

The spelling of 11666666 in words is "eleven million, six hundred sixty-six thousand, six hundred sixty-six".