6709889 has 2 divisors, whose sum is σ = 6709890. Its totient is φ = 6709888.

The previous prime is 6709877. The next prime is 6709891. The reversal of 6709889 is 9889076.

6709889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3441025 + 3268864 = 1855^2 + 1808^2 .

It is a cyclic number.

It is not a de Polignac number, because 6709889 - 2⁴ = 6709873 is a prime.

It is a super-2 number, since 2×6709889² = 90045220784642, which contains 22 as substring.

Together with 6709891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6709189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3354944 + 3354945.

It is an arithmetic number, because the mean of its divisors is an integer number (3354945).

Almost surely, 2^6709889 is an apocalyptic number.

It is an amenable number.

6709889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6709889 is an equidigital number, since it uses as much as digits as its factorization.

6709889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 6709889 is about 2590.3453437718. The cubic root of 6709889 is about 188.6130676502.

The spelling of 6709889 in words is "six million, seven hundred nine thousand, eight hundred eighty-nine".