/mnt/c/Windows/System32/notepad.exe

$ lshw
product: Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz
width: 64 bits

$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Vendor ID:             GenuineIntel

$ uname -i
x86_64

$ uname -m
x86_64

$file /bin/bash
/bin/bash: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV)

> echo %PROCESSOR_ARCHITECTURE%
AMD64

> wmic CPU get Architecture
Architecture
9  (means x86_64)