68209343 has 2 divisors, whose sum is σ = 68209344. Its totient is φ = 68209342.

The previous prime is 68209289. The next prime is 68209433. The reversal of 68209343 is 34390286.

It is a happy number.

Together with next prime (68209433) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68209343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68209543) 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, 34104671 + 34104672.

It is an arithmetic number, because the mean of its divisors is an integer number (34104672).

Almost surely, 2^68209343 is an apocalyptic number.

68209343 is a deficient number, since it is larger than the sum of its proper divisors (1).

68209343 is an equidigital number, since it uses as much as digits as its factorization.

68209343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 68209343 is about 8258.8947807803. The cubic root of 68209343 is about 408.5839369443.

The spelling of 68209343 in words is "sixty-eight million, two hundred nine thousand, three hundred forty-three".