Is 639 an Integer?

Integer Question: Is 639 an Integer?

For 639 to be an integer, 639 has to be a whole number. Furthermore, for 639 to be an integer, you should be able to write 639 without a fractional or decimal component.

639 is a whole number that can be written without a fractional component, thus 639 is an integer.

The answer to the question: "Is 639 an integer?" is YES.

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