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Yes, it can be run on ARM 64 as JAVA is cross-platformed, Ardor is written in JAVA. For the technical requirements head to
https://ardordocs.jelurida.com/Node_Reward_Program There are some guides how to run NXT/ARDOR nodes on Raspberry Pi, even solar powered one, I saw them, so you can find them easily when searching.
Thanks for the information ! I assumed that the Java project should be cross-platform, but allowed some "nuances", unfortunately ARM64 has not yet received support at the x86 / x64 level. And another question - as I understand it, to connect to this project, the node must "hold" a certain amount of coins, this is the PoS platform. If yes - how many tokens are needed to freeze on a node?