11666018 has 24 divisors (see below), whose sum is σ = 21924252. Its totient is φ = 4614624.

The previous prime is 11665963. The next prime is 11666021. The reversal of 11666018 is 81066611.

It can be written as a sum of positive squares in 2 ways, for example, as 9878449 + 1787569 = 3143^2 + 1337^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3305 + ... + 5852.

Almost surely, 2^11666018 is an apocalyptic number.

11666018 is a deficient number, since it is larger than the sum of its proper divisors (10258234).

11666018 is a wasteful number, since it uses less digits than its factorization.

11666018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186 (or 9179 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 11666018 is about 3415.5552989229. Note that the first 3 decimals coincide. The cubic root of 11666018 is about 226.7988670370.

The spelling of 11666018 in words is "eleven million, six hundred sixty-six thousand, eighteen".