How do you write six million two hundred seventy-two thousand six hundred forty cubic inches?

I have learned from my teacher that there is no short form for cubic inches;As of for example : 6 square inches  can be written as 6 sq.inches Like that the above answer for given question will be: 6,272,640 cubic inches
there also the further conversion from cubic inches to ml,ts etc.,
16.3871 milliliters3.3247 teaspoons1.1082 tablespoons.55411 fluid ounce