12668878 has 4 divisors (see below), whose sum is σ = 19003320. Its totient is φ = 6334438.

The previous prime is 12668857. The next prime is 12668881. The reversal of 12668878 is 87886621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87886621 = 887 ⋅99083.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3167218 + ... + 3167221.

It is an arithmetic number, because the mean of its divisors is an integer number (4750830).

Almost surely, 2^12668878 is an apocalyptic number.

12668878 is a deficient number, since it is larger than the sum of its proper divisors (6334442).

12668878 is an equidigital number, since it uses as much as digits as its factorization.

12668878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334441.

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

The square root of 12668878 is about 3559.3367359664. The cubic root of 12668878 is about 233.1199196041.

The spelling of 12668878 in words is "twelve million, six hundred sixty-eight thousand, eight hundred seventy-eight".