11993666 has 8 divisors (see below), whose sum is σ = 18207504. Its totient is φ = 5924500.

The previous prime is 11993659. The next prime is 11993669. The reversal of 11993666 is 66639911.

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

It is not an unprimeable number, because it can be changed into a prime (11993669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35960 + ... + 36291.

It is an arithmetic number, because the mean of its divisors is an integer number (2275938).

Almost surely, 2^11993666 is an apocalyptic number.

11993666 is a deficient number, since it is larger than the sum of its proper divisors (6213838).

11993666 is an equidigital number, since it uses as much as digits as its factorization.

11993666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72336.

The product of its digits is 52488, while the sum is 41.

The square root of 11993666 is about 3463.1872603138. The cubic root of 11993666 is about 228.9025601990.

The spelling of 11993666 in words is "eleven million, nine hundred ninety-three thousand, six hundred sixty-six".