6968509 has 2 divisors, whose sum is σ = 6968510. Its totient is φ = 6968508.

The previous prime is 6968503. The next prime is 6968531. The reversal of 6968509 is 9058696.

6968509 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., 6604900 + 363609 = 2570^2 + 603^2 .

It is a cyclic number.

It is not a de Polignac number, because 6968509 - 2³ = 6968501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6968501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3484254 + 3484255.

It is an arithmetic number, because the mean of its divisors is an integer number (3484255).

Almost surely, 2^6968509 is an apocalyptic number.

It is an amenable number.

6968509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6968509 is an equidigital number, since it uses as much as digits as its factorization.

6968509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 6968509 is about 2639.7933631252. The cubic root of 6968509 is about 191.0058293406.

The spelling of 6968509 in words is "six million, nine hundred sixty-eight thousand, five hundred nine".