For 668 to be an integer, 668 has to be a whole number. Furthermore, for 668 to be an integer, you should be able to write 668 without a fractional or decimal component.
668 is a whole number that can be written without a fractional component, thus 668 is an integer.
The answer to the question: "Is 668 an integer?" is YES.
Integer?
Check other numbers to see if they are integers.
Is 669 an Integer?
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More Information from Research Maniacs:
Is 668 a prime number?
Now you know that 668 is an integer, but do you know if 668 is a prime number?
What are the factors of 668?
What are the factors of the integer 668 you ask?
Is 668 a square number?
Find out if 668 is a perfect square number!
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