12788668 has 6 divisors (see below), whose sum is σ = 22380176. Its totient is φ = 6394332.

The previous prime is 12788639. The next prime is 12788669. The reversal of 12788668 is 86688721.

12788668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598580 + ... + 1598587.

Almost surely, 2^12788668 is an apocalyptic number.

It is an amenable number.

12788668 is a deficient number, since it is larger than the sum of its proper divisors (9591508).

12788668 is a wasteful number, since it uses less digits than its factorization.

12788668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197171 (or 3197169 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 12788668 is about 3576.1247181831. The cubic root of 12788668 is about 233.8523674902.

It can be divided in two parts, 12788 and 668, that added together give a square (13456 = 116²).

The spelling of 12788668 in words is "twelve million, seven hundred eighty-eight thousand, six hundred sixty-eight".