3600

Number
$3600$ (three thousand, six hundred) is:


 * $2^4 \times 3^2 \times 5^2$


 * The $60$th square number after $1, 4, 9, 16, 25, 36, \ldots, 2304, 2401, 2500, 2601, 2704, 2809, 2916, 3025, 3136, 3249, 3364, 3481$:
 * $3600 = 60 \times 60$