12660135 has 16 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 6730400.

The previous prime is 12660113. The next prime is 12660139. The reversal of 12660135 is 53106621.

12660135 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12660135 - 2⁹ = 12659623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4210 + ... + 6560.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^12660135 is an apocalyptic number.

12660135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12660135 is a deficient number, since it is larger than the sum of its proper divisors (7661145).

12660135 is a wasteful number, since it uses less digits than its factorization.

12660135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718.

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

The square root of 12660135 is about 3558.1083457365. The cubic root of 12660135 is about 233.0662806395.

Adding to 12660135 its reverse (53106621), we get a palindrome (65766756).

The spelling of 12660135 in words is "twelve million, six hundred sixty thousand, one hundred thirty-five".