6668913 has 16 divisors (see below), whose sum is σ = 9637056. Its totient is φ = 4085760.

The previous prime is 6668911. The next prime is 6668939. The reversal of 6668913 is 3198666.

It is a happy number.

It is not a de Polignac number, because 6668913 - 2¹ = 6668911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6668911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (602316).

Almost surely, 2^6668913 is an apocalyptic number.

It is an amenable number.

6668913 is a deficient number, since it is larger than the sum of its proper divisors (2968143).

6668913 is a wasteful number, since it uses less digits than its factorization.

6668913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104.

The product of its digits is 46656, while the sum is 39.

The square root of 6668913 is about 2582.4238614139. The cubic root of 6668913 is about 188.2283422084.

The spelling of 6668913 in words is "six million, six hundred sixty-eight thousand, nine hundred thirteen".