2688668426 has 16 divisors (see below), whose sum is σ = 4066329600. Its totient is φ = 1333265568.

The previous prime is 2688668419. The next prime is 2688668441. The reversal of 2688668426 is 6248668862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127310 + ... + 146918.

It is an arithmetic number, because the mean of its divisors is an integer number (254145600).

Almost surely, 2^2688668426 is an apocalyptic number.

2688668426 is a deficient number, since it is larger than the sum of its proper divisors (1377661174).

2688668426 is a wasteful number, since it uses less digits than its factorization.

2688668426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20173.

The product of its digits is 10616832, while the sum is 56.

The square root of 2688668426 is about 51852.3714597510. The cubic root of 2688668426 is about 1390.5258997215.

The spelling of 2688668426 in words is "two billion, six hundred eighty-eight million, six hundred sixty-eight thousand, four hundred twenty-six".