For 689 to be an integer, 689 has to be a whole number. Furthermore, for 689 to be an integer, you should be able to write 689 without a fractional or decimal component.
689 is a whole number that can be written without a fractional component, thus 689 is an integer.
The answer to the question: "Is 689 an integer?" is YES.
Integer?
Check other numbers to see if they are integers.
Is 690 an Integer?
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More Information from Research Maniacs:
Is 689 a prime number?
Now you know that 689 is an integer, but do you know if 689 is a prime number?
What are the factors of 689?
What are the factors of the integer 689 you ask?
Is 689 a square number?
Find out if 689 is a perfect square number!
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