import sequtils,strutils
var
    N = stdin.readline.parseBiggestInt
    y = newSeq[int64](0)
    i : int64
    ans = "NO"
i = 2

while i * i <= N and ans == "NO":
    if N mod i == 0:
        for j in y:
            if j mod i == 0 or i mod j == 0:
                ans = "YES"
                break
        y.add(i)
        y.add(N div i)
        if (N div i) mod i == 0 and i * i != N:
            ans = "YES"
    i += 1
echo ans