68341909 has 2 divisors, whose sum is σ = 68341910. Its totient is φ = 68341908.

The previous prime is 68341907. The next prime is 68341927. The reversal of 68341909 is 90914386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 31684 = 8265^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 68341909 - 2¹ = 68341907 is a prime.

Together with 68341907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68341907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34170954 + 34170955.

It is an arithmetic number, because the mean of its divisors is an integer number (34170955).

Almost surely, 2^68341909 is an apocalyptic number.

It is an amenable number.

68341909 is a deficient number, since it is larger than the sum of its proper divisors (1).

68341909 is an equidigital number, since it uses as much as digits as its factorization.

68341909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 68341909 is about 8266.9165352022. The cubic root of 68341909 is about 408.8484622223.

The spelling of 68341909 in words is "sixty-eight million, three hundred forty-one thousand, nine hundred nine".