Mr. R.’s World of Math

After Carlos typed in the correct answer, the machine started beeping as if it was cheering. The Words MAKE A WISH popped up on the screen. We all screamed at Carlos to make a wish.
“I wish that all the chocolate in the world would fly into the recess yard!”
A puff of purple smoke came out of the machine and we stood around the classroom waiting to see if anything would happen. Just when it seemed as if nothing would, the lights flickered, and then they went off completely. It was pitch black in the classroom.
“Hey, I can’t see anything!” yelled Joe.
“I’m scared of the dark!” yelled Jenna.
“Me too!” yelled Zander.
Then suddenly there was an explosion of light, and when we opened our eyes, we all went to the window to see if there was chocolate in the recess yard.
We didn’t see any chocolate, but we saw three of the kindergartener’s lunch boxes pop open, and the chocolate bars that were inside of them fly into the sky.
“Hey, the chocolate’s leaving the recess yard, not coming to it!” yelled Carlos.
“Yeah, this wishing machine is broken!” complained Zander.
“Yeah, it’s working in reverse,” said Jake.
‘Maybe we should try a different wish,” I said, “Who wants to try next?”
Jackie raised her hand. I called on her, and she went over and squeezed the red orb. A math riddle popped up on the screen.

It said:

I am a 2-digit number between 60 and 80
My tens digit is 2 more than my one’s digit
I am not 64
What Number am I?