12668305 has 16 divisors (see below), whose sum is σ = 16902144. Its totient is φ = 9051840.

The previous prime is 12668287. The next prime is 12668353. The reversal of 12668305 is 50386621.

It is not a de Polignac number, because 12668305 - 2¹³ = 12660113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian 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, 1129 + ... + 5158.

It is an arithmetic number, because the mean of its divisors is an integer number (1056384).

Almost surely, 2^12668305 is an apocalyptic number.

It is an amenable number.

12668305 is a deficient number, since it is larger than the sum of its proper divisors (4233839).

12668305 is a wasteful number, since it uses less digits than its factorization.

12668305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12668305 is about 3559.2562425316. The cubic root of 12668305 is about 233.1164049617.

The spelling of 12668305 in words is "twelve million, six hundred sixty-eight thousand, three hundred five".