12660055 has 8 divisors (see below), whose sum is σ = 15258672. Its totient is φ = 10083648.

The previous prime is 12660013. The next prime is 12660091. The reversal of 12660055 is 55006621.

12660055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12660055 - 2¹⁵ = 12627287 is a prime.

It is a Duffinian number.

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, 4269 + ... + 6598.

It is an arithmetic number, because the mean of its divisors is an integer number (1907334).

Almost surely, 2^12660055 is an apocalyptic number.

12660055 is a deficient number, since it is larger than the sum of its proper divisors (2598617).

12660055 is a wasteful number, since it uses less digits than its factorization.

12660055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 12660055 is about 3558.0971037902. The cubic root of 12660055 is about 233.0657897195.

Adding to 12660055 its reverse (55006621), we get a palindrome (67666676).

The spelling of 12660055 in words is "twelve million, six hundred sixty thousand, fifty-five".