12866705 has 32 divisors (see below), whose sum is σ = 17832960. Its totient is φ = 8847360.

The previous prime is 12866681. The next prime is 12866717. The reversal of 12866705 is 50766821.

It is not a de Polignac number, because 12866705 - 2¹⁰ = 12865681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49937 + ... + 50193.

It is an arithmetic number, because the mean of its divisors is an integer number (557280).

Almost surely, 2^12866705 is an apocalyptic number.

It is an amenable number.

12866705 is a deficient number, since it is larger than the sum of its proper divisors (4966255).

12866705 is a wasteful number, since it uses less digits than its factorization.

12866705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 12866705 is about 3587.0189572959. The cubic root of 12866705 is about 234.3270623143.

The spelling of 12866705 in words is "twelve million, eight hundred sixty-six thousand, seven hundred five".