12668705 has 32 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 8486016.

The previous prime is 12668659. The next prime is 12668717. The reversal of 12668705 is 50786621.

It is not a de Polignac number, because 12668705 - 2⁶ = 12668641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 142301 + ... + 142389.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^12668705 is an apocalyptic number.

It is an amenable number.

12668705 is a deficient number, since it is larger than the sum of its proper divisors (5475295).

12668705 is an frugal number, since it uses more digits than its factorization.

12668705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 184 counting only the distinct ones).

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

The square root of 12668705 is about 3559.3124336029. The cubic root of 12668705 is about 233.1188584754.

The spelling of 12668705 in words is "twelve million, six hundred sixty-eight thousand, seven hundred five".