12005660 has 12 divisors (see below), whose sum is σ = 25211928. Its totient is φ = 4802256.

The previous prime is 12005659. The next prime is 12005683. The reversal of 12005660 is 6650021.

12005660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 600283 = 12005660 / (1 + 2 + 0 + 0 + 5 + 6 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300122 + ... + 300161.

It is an arithmetic number, because the mean of its divisors is an integer number (2100994).

Almost surely, 2^12005660 is an apocalyptic number.

12005660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12005660 is an abundant number, since it is smaller than the sum of its proper divisors (13206268).

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

12005660 is a wasteful number, since it uses less digits than its factorization.

12005660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600292 (or 600290 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12005660 is about 3464.9184694593. The cubic root of 12005660 is about 228.9788377564.

Adding to 12005660 its reverse (6650021), we get a palindrome (18655681).

The spelling of 12005660 in words is "twelve million, five thousand, six hundred sixty".