11661668 has 12 divisors (see below), whose sum is σ = 21482160. Its totient is φ = 5523912.

The previous prime is 11661659. The next prime is 11661691. The reversal of 11661668 is 86616611.

11661668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 76646 + ... + 76797.

It is an arithmetic number, because the mean of its divisors is an integer number (1790180).

Almost surely, 2^11661668 is an apocalyptic number.

It is an amenable number.

11661668 is a deficient number, since it is larger than the sum of its proper divisors (9820492).

11661668 is a wasteful number, since it uses less digits than its factorization.

11661668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153466 (or 153464 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 11661668 is about 3414.9184470497. The cubic root of 11661668 is about 226.7706741060.

The spelling of 11661668 in words is "eleven million, six hundred sixty-one thousand, six hundred sixty-eight".