11990666 has 8 divisors (see below), whose sum is σ = 18053184. Its totient is φ = 5972940.

The previous prime is 11990639. The next prime is 11990677. The reversal of 11990666 is 66609911.

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

It is a super-2 number, since 2×11990666² = 287552142247112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10520 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (2256648).

Almost surely, 2^11990666 is an apocalyptic number.

11990666 is a deficient number, since it is larger than the sum of its proper divisors (6062518).

11990666 is a wasteful number, since it uses less digits than its factorization.

11990666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22396.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 11990666 is about 3462.7541061993. The cubic root of 11990666 is about 228.8834733203.

The spelling of 11990666 in words is "eleven million, nine hundred ninety thousand, six hundred sixty-six".