It looked like that Antonov An25.
I went through the plane when it landed at Paine Field which is also used by Boeing Everett. It was totally awesome. It’s an Antonov AN-225 MRIYA with six engines. There is a smaller version, four engines, the size of the Air Force C5 but carries a heavier load.
Antonov An-225 Mriya, the largest airplane in the world, and the only one of its kind now in service. Originally built to carry the Russian space shuttle, the Antonov is a giant cargo-carrying workhorse these days.