68103209 has 2 divisors, whose sum is σ = 68103210. Its totient is φ = 68103208.

The previous prime is 68103197. The next prime is 68103227. The reversal of 68103209 is 90230186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67699984 + 403225 = 8228^2 + 635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68103209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68103229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34051604 + 34051605.

It is an arithmetic number, because the mean of its divisors is an integer number (34051605).

Almost surely, 2^68103209 is an apocalyptic number.

It is an amenable number.

68103209 is a deficient number, since it is larger than the sum of its proper divisors (1).

68103209 is an equidigital number, since it uses as much as digits as its factorization.

68103209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 68103209 is about 8252.4668433142. The cubic root of 68103209 is about 408.3719075410.

The spelling of 68103209 in words is "sixty-eight million, one hundred three thousand, two hundred nine".