6939697 has 2 divisors, whose sum is σ = 6939698. Its totient is φ = 6939696.

The previous prime is 6939679. The next prime is 6939733. The reversal of 6939697 is 7969396.

Together with previous prime (6939679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4036081 + 2903616 = 2009^2 + 1704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6939697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6939697.

It is not a weakly prime, because it can be changed into another prime (6939677) 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, 3469848 + 3469849.

It is an arithmetic number, because the mean of its divisors is an integer number (3469849).

Almost surely, 2^6939697 is an apocalyptic number.

It is an amenable number.

6939697 is a deficient number, since it is larger than the sum of its proper divisors (1).

6939697 is an equidigital number, since it uses as much as digits as its factorization.

6939697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 49.

The square root of 6939697 is about 2634.3304652226. The cubic root of 6939697 is about 190.7422214432.

The spelling of 6939697 in words is "six million, nine hundred thirty-nine thousand, six hundred ninety-seven".