def factorization(n):
    arr = []
    temp = n
    for i in range(2, int(-(-n**0.5//1))+1):
        if temp%i==0:
            cnt=0
            while temp%i==0:
                cnt+=1
                temp //= i
            arr.append([i, cnt])

    if temp!=1:
        arr.append([temp, 1])

    return arr

X = int(input())
L = factorization(X)
for i in range(len(L)):
    L[i][1] = L[i][1] % 2
    
ans = 1
for a, b in L:
    ans *= a ** b
print(ans)