11943666 has 64 divisors (see below), whose sum is σ = 31948800. Its totient is φ = 3230928.

The previous prime is 11943653. The next prime is 11943667. The reversal of 11943666 is 66634911.

It is a super-3 number, since 3×11943666³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11943666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11943667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6351 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (499200).

Almost surely, 2^11943666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11943666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15974400).

11943666 is an abundant number, since it is smaller than the sum of its proper divisors (20005134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11943666 is a wasteful number, since it uses less digits than its factorization.

11943666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1694 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 11943666 is about 3455.9609372792. The cubic root of 11943666 is about 228.5840290301.

The spelling of 11943666 in words is "eleven million, nine hundred forty-three thousand, six hundred sixty-six".