To find the product of \( 2\pi \) and \( 34 \), we calculate:
\[ 2\pi \times 34 = 68\pi. \]
The number \( \pi \) is known to be irrational, which means it cannot be expressed as a fraction of two integers. The product of a non-zero rational number (like \( 68 \)) and an irrational number (\( \pi \)) is always irrational. Therefore, \( 68\pi \) is an irrational number.