12661285 has 16 divisors (see below), whose sum is σ = 18700416. Its totient is φ = 8013888.

The previous prime is 12661273. The next prime is 12661301. The reversal of 12661285 is 58216621.

It is a cyclic number.

It is not a de Polignac number, because 12661285 - 2⁷ = 12661157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13459 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (1168776).

Almost surely, 2^12661285 is an apocalyptic number.

It is an amenable number.

12661285 is a deficient number, since it is larger than the sum of its proper divisors (6039131).

12661285 is a wasteful number, since it uses less digits than its factorization.

12661285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27852.

The product of its digits is 5760, while the sum is 31.

The square root of 12661285 is about 3558.2699447906. The cubic root of 12661285 is about 233.0733373865.

The spelling of 12661285 in words is "twelve million, six hundred sixty-one thousand, two hundred eighty-five".