12345636 has 12 divisors (see below), whose sum is σ = 28806512. Its totient is φ = 4115208.

The previous prime is 12345623. The next prime is 12345637. The reversal of 12345636 is 63654321.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12345637) 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, 514390 + ... + 514413.

Almost surely, 2^12345636 is an apocalyptic number.

It is an amenable number.

12345636 is an abundant number, since it is smaller than the sum of its proper divisors (16460876).

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

12345636 is a wasteful number, since it uses less digits than its factorization.

12345636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028810 (or 1028808 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 12345636 is about 3513.6357238621. The cubic root of 12345636 is about 231.1201563754.

Adding to 12345636 its reverse (63654321), we get a palindrome (75999957).

The spelling of 12345636 in words is "twelve million, three hundred forty-five thousand, six hundred thirty-six".