It is a happy number.
It is a zygodrome in base 3.
It is an unprimeable number.
3564 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5082).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3564 is a wasteful number, since it uses less digits than its factorization.
3564 is an evil number, because the sum of its binary digits is even.
The square root of 3564 is about 59.6992462264. The cubic root of 3564 is about 15.2749301090.
Subtracting 3564 from its reverse (4653), we obtain a square (1089 = 332).
The spelling of 3564 in words is "three thousand, five hundred sixty-four".