12866668 has 6 divisors (see below), whose sum is σ = 22516676. Its totient is φ = 6433332.

The previous prime is 12866647. The next prime is 12866681. The reversal of 12866668 is 86666821.

It is a super-2 number, since 2×12866668² = 331102290844448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608330 + ... + 1608337.

Almost surely, 2^12866668 is an apocalyptic number.

It is an amenable number.

12866668 is a deficient number, since it is larger than the sum of its proper divisors (9650008).

12866668 is a wasteful number, since it uses less digits than its factorization.

12866668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216671 (or 3216669 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 12866668 is about 3587.0137998062. The cubic root of 12866668 is about 234.3268377007.

The spelling of 12866668 in words is "twelve million, eight hundred sixty-six thousand, six hundred sixty-eight".