12013566 has 16 divisors (see below), whose sum is σ = 24107664. Its totient is φ = 3991104.

The previous prime is 12013553. The next prime is 12013571. The reversal of 12013566 is 66531021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (1506729).

Almost surely, 2^12013566 is an apocalyptic number.

12013566 is an abundant number, since it is smaller than the sum of its proper divisors (12094098).

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

12013566 is a wasteful number, since it uses less digits than its factorization.

12013566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12013566 is about 3466.0591454850. The cubic root of 12013566 is about 229.0290893172.

Adding to 12013566 its reverse (66531021), we get a palindrome (78544587).

The spelling of 12013566 in words is "twelve million, thirteen thousand, five hundred sixty-six".