12666485 has 8 divisors (see below), whose sum is σ = 16369080. Its totient is φ = 9353664.

The previous prime is 12666461. The next prime is 12666503. The reversal of 12666485 is 58466621.

It can be written as a sum of positive squares in 4 ways, for example, as 1868689 + 10797796 = 1367^2 + 3286^2 .

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 12666485 - 2⁶ = 12666421 is a prime.

It is a congruent number.

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, 97370 + ... + 97499.

It is an arithmetic number, because the mean of its divisors is an integer number (2046135).

Almost surely, 2^12666485 is an apocalyptic number.

It is an amenable number.

12666485 is a deficient number, since it is larger than the sum of its proper divisors (3702595).

12666485 is a wasteful number, since it uses less digits than its factorization.

12666485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194887.

The product of its digits is 69120, while the sum is 38.

The square root of 12666485 is about 3559.0005619556. Note that the first 3 decimals coincide. The cubic root of 12666485 is about 233.1052408221.

The spelling of 12666485 in words is "twelve million, six hundred sixty-six thousand, four hundred eighty-five".