6666207 has 16 divisors (see below), whose sum is σ = 9452160. Its totient is φ = 4167072.

The previous prime is 6666203. The next prime is 6666223. The reversal of 6666207 is 7026666.

6666207 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6666207 - 2² = 6666203 is a prime.

6666207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5553 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (590760).

Almost surely, 2^6666207 is an apocalyptic number.

6666207 is a deficient number, since it is larger than the sum of its proper divisors (2785953).

6666207 is a wasteful number, since it uses less digits than its factorization.

6666207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 6666207 is about 2581.8998818699. The cubic root of 6666207 is about 188.2028800478.

The spelling of 6666207 in words is "six million, six hundred sixty-six thousand, two hundred seven".