12663604 has 12 divisors (see below), whose sum is σ = 22925700. Its totient is φ = 6113408.

The previous prime is 12663601. The next prime is 12663619. The reversal of 12663604 is 40636621.

It can be written as a sum of positive squares in 2 ways, for example, as 3348900 + 9314704 = 1830^2 + 3052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54469 + ... + 54700.

It is an arithmetic number, because the mean of its divisors is an integer number (1910475).

Almost surely, 2^12663604 is an apocalyptic number.

It is an amenable number.

12663604 is a deficient number, since it is larger than the sum of its proper divisors (10262096).

12663604 is a wasteful number, since it uses less digits than its factorization.

12663604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109202 (or 109200 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 12663604 is about 3558.5957904769. The cubic root of 12663604 is about 233.0875661706.

The spelling of 12663604 in words is "twelve million, six hundred sixty-three thousand, six hundred four".