Answer :

 For this case we have the following number:
 1,000,000
 We note that the number has 7 significant figures.
 To write it in scientific notation we must write the number as follows:
 [tex]a * 10 ^ b [/tex]
 Where,
 a: first significant figure
 b: Exponent that represents the rest of significant figures.
 Rewriting the number we have:
 [tex]1000000 = 1 * 10 ^ 6 [/tex]
 Answer:
 1,000,000 to scientific notation is:
 [tex]1 * 10 ^ 6[/tex]