17.64 centimeters is equal to 6.945 inches.
To give some comparisons, 17.64 centimeters is slightly longer than a dollar bill (15.6 centimeters), but shorter than a standard pencil (17.8 centimeters) and a standard cellphone (14.7 centimeters). It is also slightly shorter than a paperback novel (19 centimeters) and a credit card (8.6 centimeters).