11900666 has 4 divisors (see below), whose sum is σ = 17851002. Its totient is φ = 5950332.

The previous prime is 11900657. The next prime is 11900671. The reversal of 11900666 is 66600911.

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

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 483025 = 3379^2 + 695^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2975165 + ... + 2975168.

Almost surely, 2^11900666 is an apocalyptic number.

11900666 is a deficient number, since it is larger than the sum of its proper divisors (5950336).

11900666 is an equidigital number, since it uses as much as digits as its factorization.

11900666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950335.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 11900666 is about 3449.7341926589. The cubic root of 11900666 is about 228.3093804534.

The spelling of 11900666 in words is "eleven million, nine hundred thousand, six hundred sixty-six".