6787289 has 2 divisors, whose sum is σ = 6787290. Its totient is φ = 6787288.

The previous prime is 6787279. The next prime is 6787343. The reversal of 6787289 is 9827876.

6787289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 537289 = 2500^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787289 - 2⁴ = 6787273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6787279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393644 + 3393645.

It is an arithmetic number, because the mean of its divisors is an integer number (3393645).

Almost surely, 2^6787289 is an apocalyptic number.

It is an amenable number.

6787289 is a deficient number, since it is larger than the sum of its proper divisors (1).

6787289 is an equidigital number, since it uses as much as digits as its factorization.

6787289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 6787289 is about 2605.2425990683. The cubic root of 6787289 is about 189.3355274686.

The spelling of 6787289 in words is "six million, seven hundred eighty-seven thousand, two hundred eighty-nine".