3663564 has 12 divisors (see below), whose sum is σ = 8548344. Its totient is φ = 1221184.

The previous prime is 3663563. The next prime is 3663577. The reversal of 3663564 is 4653663.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3663563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152637 + ... + 152660.

It is an arithmetic number, because the mean of its divisors is an integer number (712362).

Almost surely, 2^3663564 is an apocalyptic number.

It is an amenable number.

3663564 is an abundant number, since it is smaller than the sum of its proper divisors (4884780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3663564 is a wasteful number, since it uses less digits than its factorization.

3663564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305304 (or 305302 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 3663564 is about 1914.0438866442. The cubic root of 3663564 is about 154.1586603423.

Subtracting 3663564 from its reverse (4653663), we obtain a palindrome (990099).

The spelling of 3663564 in words is "three million, six hundred sixty-three thousand, five hundred sixty-four".