12660145 has 8 divisors (see below), whose sum is σ = 15384960. Its totient is φ = 9999600.

The previous prime is 12660139. The next prime is 12660157. The reversal of 12660145 is 54106621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12660145 - 2⁵ = 12660113 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15631 + ... + 16420.

It is an arithmetic number, because the mean of its divisors is an integer number (1923120).

Almost surely, 2^12660145 is an apocalyptic number.

It is an amenable number.

12660145 is a deficient number, since it is larger than the sum of its proper divisors (2724815).

12660145 is an equidigital number, since it uses as much as digits as its factorization.

12660145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32135.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12660145 is about 3558.1097509773. The cubic root of 12660145 is about 233.0663420044.

Adding to 12660145 its reverse (54106621), we get a palindrome (66766766).

The spelling of 12660145 in words is "twelve million, six hundred sixty thousand, one hundred forty-five".