11666841 has 8 divisors (see below), whose sum is σ = 15582624. Its totient is φ = 7764480.

The previous prime is 11666833. The next prime is 11666843. The reversal of 11666841 is 14866611.

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

It is not a de Polignac number, because 11666841 - 2³ = 11666833 is a prime.

It is a super-2 number, since 2×11666841² = 272230357838562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11666843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (1947828).

Almost surely, 2^11666841 is an apocalyptic number.

It is an amenable number.

11666841 is a deficient number, since it is larger than the sum of its proper divisors (3915783).

11666841 is an equidigital number, since it uses as much as digits as its factorization.

11666841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its digits is 6912, while the sum is 33.

The square root of 11666841 is about 3415.6757750114. The cubic root of 11666841 is about 226.8042002214.

The spelling of 11666841 in words is "eleven million, six hundred sixty-six thousand, eight hundred forty-one".