Installing KingRoot on Android 6.0.1 (Marshmallow) is a common way to gain administrative access without using a computer. While KingRoot is famous for its "one-click" simplicity, it can be tricky on Marshmallow due to increased security patches.
No. Verizon locked the bootloader. KingRoot will fail. No known exploit exists for that specific device on 6.0.1. kingroot android 601 install
If KingRoot fails or feels sketchy, consider these: Installing KingRoot on Android 6
: For most modern devices, you must first manually unlock the bootloader via a PC before any root method will work. On your Android device, go to Settings > Security