666668336 has 10 divisors (see below), whose sum is σ = 1291669932. Its totient is φ = 333334160.

The previous prime is 666668309. The next prime is 666668347. The reversal of 666668336 is 633866666.

666668336 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 as a sum of consecutive naturals, namely, 20833370 + ... + 20833401.

Almost surely, 2^666668336 is an apocalyptic number.

It is an amenable number.

666668336 is a deficient number, since it is larger than the sum of its proper divisors (625001596).

666668336 is a wasteful number, since it uses less digits than its factorization.

666668336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666779 (or 41666773 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 50.

The square root of 666668336 is about 25819.9213011969. The cubic root of 666668336 is about 873.5811938842.

The spelling of 666668336 in words is "six hundred sixty-six million, six hundred sixty-eight thousand, three hundred thirty-six".