Shadow: Five Presidents and the Legacy of Watergate is a 1999 book by Washington Post journalist Bob Woodward, written with a narrative voice while utilizing firsthand interviews and news reports for its historical basis. For the 608-page book, Woodward used extensive notes and also interviewed President Ford, President Bush's chief of staff, James Baker, and other people of focus.
Shadow: Five Presidents and the Legacy of Watergate has more than 610 pages.
It only has 608 pages. I guess it's difficult because the numbers are close together, not sure why really, seems like this would be easy for an AI.