12688366 has 8 divisors (see below), whose sum is σ = 19344744. Its totient is φ = 6240120.

The previous prime is 12688343. The next prime is 12688367. The reversal of 12688366 is 66388621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51880 + ... + 52123.

It is an arithmetic number, because the mean of its divisors is an integer number (2418093).

Almost surely, 2^12688366 is an apocalyptic number.

12688366 is a deficient number, since it is larger than the sum of its proper divisors (6656378).

12688366 is a wasteful number, since it uses less digits than its factorization.

12688366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104066.

The product of its digits is 82944, while the sum is 40.

The square root of 12688366 is about 3562.0732726883. The cubic root of 12688366 is about 233.2393912081.

It can be divided in two parts, 126883 and 66, that multiplied together give a triangular number (8374278 = T₄₀₉₂).

The spelling of 12688366 in words is "twelve million, six hundred eighty-eight thousand, three hundred sixty-six".