11666361 has 24 divisors (see below), whose sum is σ = 19051680. Its totient is φ = 6314112.

The previous prime is 11666353. The next prime is 11666371. The reversal of 11666361 is 16366611.

11666361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11666361 - 2³ = 11666353 is a prime.

It is a super-2 number, since 2×11666361² = 272207957964642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11666351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 705 + ... + 4881.

It is an arithmetic number, because the mean of its divisors is an integer number (793820).

Almost surely, 2^11666361 is an apocalyptic number.

It is an amenable number.

11666361 is a deficient number, since it is larger than the sum of its proper divisors (7385319).

11666361 is a wasteful number, since it uses less digits than its factorization.

11666361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213 (or 4206 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 11666361 is about 3415.6055100084. The cubic root of 11666361 is about 226.8010897677.

The spelling of 11666361 in words is "eleven million, six hundred sixty-six thousand, three hundred sixty-one".