11666279 has 4 divisors (see below), whose sum is σ = 11709600. Its totient is φ = 11622960.

The previous prime is 11666273. The next prime is 11666299. The reversal of 11666279 is 97266611.

11666279 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11666279 - 2²⁰ = 10617703 is a prime.

It is a super-2 number, since 2×11666279² = 272204131411682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666273) 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 3 ways as a sum of consecutive naturals, for example, 21254 + ... + 21795.

It is an arithmetic number, because the mean of its divisors is an integer number (2927400).

Almost surely, 2^11666279 is an apocalyptic number.

11666279 is a deficient number, since it is larger than the sum of its proper divisors (43321).

11666279 is an equidigital number, since it uses as much as digits as its factorization.

11666279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43320.

The product of its digits is 27216, while the sum is 38.

The square root of 11666279 is about 3415.5935062592. The cubic root of 11666279 is about 226.8005583899.

The spelling of 11666279 in words is "eleven million, six hundred sixty-six thousand, two hundred seventy-nine".