Because 69 has an odd number of 1s in its binary representation, it is sometimes called an "odious number." Of note is that 692 (4761) and 693 (328509) together use every decimal digit from 0–9. 69 is equal to 105 octal, while 105 is equal to 69 hexadecimal.
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Answer:
Because 69 has an odd number of 1s in its binary representation, it is sometimes called an "odious number." Of note is that 692 (4761) and 693 (328509) together use every decimal digit from 0–9. 69 is equal to 105 octal, while 105 is equal to 69 hexadecimal.