6668788379 has 8 divisors (see below), whose sum is σ = 7315686720. Its totient is φ = 6028664200.

The previous prime is 6668788367. The next prime is 6668788391. The reversal of 6668788379 is 9738878666.

It is an interprime number because it is at equal distance from previous prime (6668788367) and next prime (6668788391).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6668788379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668788579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691477 + ... + 1695414.

It is an arithmetic number, because the mean of its divisors is an integer number (914460840).

Almost surely, 2^6668788379 is an apocalyptic number.

6668788379 is a deficient number, since it is larger than the sum of its proper divisors (646898341).

6668788379 is a wasteful number, since it uses less digits than its factorization.

6668788379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387081.

The product of its digits is 146313216, while the sum is 68.

The square root of 6668788379 is about 81662.6498406707. The cubic root of 6668788379 is about 1882.2716973595.

The spelling of 6668788379 in words is "six billion, six hundred sixty-eight million, seven hundred eighty-eight thousand, three hundred seventy-nine".