679 in words

679 is written "six hundred seventy-nine". British English inserts "and" before the final part, giving "six hundred and seventy-nine"; American English leaves it out.

Where each word comes from

The same number, other ways

In words (US)

Six hundred seventy-nine

In words (UK)

Six hundred and seventy-nine

Ordinal

679th — six hundred seventy-ninth

Roman numeral

DCLXXIX

Digits

679

Writing it on a cheque

On a cheque the amount line reads "Six hundred and seventy-nine and 00/100" — or "Six hundred and seventy-nine only" in Indian and much of Commonwealth practice. The fraction or the word "only" exists to stop anyone appending digits after what you wrote. Draw a line through any space left over for the same reason.