12008646 has 96 divisors (see below), whose sum is σ = 30707040. Its totient is φ = 3359232.

The previous prime is 12008621. The next prime is 12008657. The reversal of 12008646 is 64680021.

12008646 is a `hidden beast` number, since 12 + 0 + 0 + 8 + 646 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164466 + ... + 164538.

It is an arithmetic number, because the mean of its divisors is an integer number (319865).

Almost surely, 2^12008646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12008646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15353520).

12008646 is an abundant number, since it is smaller than the sum of its proper divisors (18698394).

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

12008646 is a wasteful number, since it uses less digits than its factorization.

12008646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 12008646 is about 3465.3493330399. The cubic root of 12008646 is about 228.9978197513.

Adding to 12008646 its reverse (64680021), we get a palindrome (76688667).

The spelling of 12008646 in words is "twelve million, eight thousand, six hundred forty-six".