68208193 has 2 divisors, whose sum is σ = 68208194. Its totient is φ = 68208192.

The previous prime is 68208181. The next prime is 68208227. The reversal of 68208193 is 39180286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44315649 + 23892544 = 6657^2 + 4888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68208193 is a prime.

It is not a weakly prime, because it can be changed into another prime (68208103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34104096 + 34104097.

It is an arithmetic number, because the mean of its divisors is an integer number (34104097).

Almost surely, 2^68208193 is an apocalyptic number.

It is an amenable number.

68208193 is a deficient number, since it is larger than the sum of its proper divisors (1).

68208193 is an equidigital number, since it uses as much as digits as its factorization.

68208193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 68208193 is about 8258.8251585804. The cubic root of 68208193 is about 408.5816407087.

The spelling of 68208193 in words is "sixty-eight million, two hundred eight thousand, one hundred ninety-three".