12668066 has 4 divisors (see below), whose sum is σ = 19002102. Its totient is φ = 6334032.

The previous prime is 12668059. The next prime is 12668081. The reversal of 12668066 is 66086621.

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., 10923025 + 1745041 = 3305^2 + 1321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3167015 + ... + 3167018.

Almost surely, 2^12668066 is an apocalyptic number.

12668066 is a deficient number, since it is larger than the sum of its proper divisors (6334036).

12668066 is an equidigital number, since it uses as much as digits as its factorization.

12668066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334035.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 12668066 is about 3559.2226679431. Note that the first 3 decimals coincide. The cubic root of 12668066 is about 233.1149389626.

The spelling of 12668066 in words is "twelve million, six hundred sixty-eight thousand, sixty-six".