12666207 has 8 divisors (see below), whose sum is σ = 17881776. Its totient is φ = 7947392.

The previous prime is 12666191. The next prime is 12666211. The reversal of 12666207 is 70266621.

12666207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12666207 - 2⁴ = 12666191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124128 + ... + 124229.

It is an arithmetic number, because the mean of its divisors is an integer number (2235222).

Almost surely, 2^12666207 is an apocalyptic number.

12666207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12666207 is a deficient number, since it is larger than the sum of its proper divisors (5215569).

12666207 is a wasteful number, since it uses less digits than its factorization.

12666207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248377.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 12666207 is about 3558.9615058328. The cubic root of 12666207 is about 233.1035354363.

The spelling of 12666207 in words is "twelve million, six hundred sixty-six thousand, two hundred seven".