6718897 has 2 divisors, whose sum is σ = 6718898. Its totient is φ = 6718896.

The previous prime is 6718889. The next prime is 6718919. The reversal of 6718897 is 7988176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6533136 + 185761 = 2556^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 6718897 - 2³ = 6718889 is a prime.

It is not a weakly prime, because it can be changed into another prime (6718997) 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, 3359448 + 3359449.

It is an arithmetic number, because the mean of its divisors is an integer number (3359449).

Almost surely, 2^6718897 is an apocalyptic number.

It is an amenable number.

6718897 is a deficient number, since it is larger than the sum of its proper divisors (1).

6718897 is an equidigital number, since it uses as much as digits as its factorization.

6718897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 46.

The square root of 6718897 is about 2592.0835248888. The cubic root of 6718897 is about 188.6974340119.

The spelling of 6718897 in words is "six million, seven hundred eighteen thousand, eight hundred ninety-seven".