6718667 has 2 divisors, whose sum is σ = 6718668. Its totient is φ = 6718666.

The previous prime is 6718589. The next prime is 6718687. The reversal of 6718667 is 7668176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6718667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6718687) 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 as a sum of consecutive naturals, namely, 3359333 + 3359334.

It is an arithmetic number, because the mean of its divisors is an integer number (3359334).

Almost surely, 2^6718667 is an apocalyptic number.

6718667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6718667 is an equidigital number, since it uses as much as digits as its factorization.

6718667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 6718667 is about 2592.0391586548. The cubic root of 6718667 is about 188.6952808358.

The spelling of 6718667 in words is "six million, seven hundred eighteen thousand, six hundred sixty-seven".