why 538 not 535?

Has there always been 538 electoral votes
Since 1964, there have been 538 electors. States select 535 of the electors, this number matches the aggregate total of their congressional delegations.
Full answer in: en.wikipedia.org
What does 538 mean?
538 may refer to: 538, the year in Western (Gregorian) calendar. The number of electors in the United States Electoral College. FiveThirtyEight, American political and statistical analysis blog. Radio 538, Dutch radio station aimed at young people.
Full answer in: en.wikipedia.org
More questions like: What does 538 mean?
What happens if 270 is not reached?
A candidate must receive an absolute majority of electoral votes (currently 270) to win the presidency or the vice presidency. If no candidate receives a majority in the election for president or vice president, that election is determined via a contingency procedure established by the 12th Amendment.
Full answer in: en.wikipedia.org
What happens if no one wins Electoral College?
If no candidate receives a majority of electoral votes, the Presidential election leaves the Electoral College process and moves to Congress. The House of Representatives elects the President from the 3 Presidential candidates who received the most electoral votes. ... Each Senator casts one vote for Vice President.
Full answer in: www.archives.gov