2688166672 has 20 divisors (see below), whose sum is σ = 5329448080. Its totient is φ = 1312825248.

The previous prime is 2688166669. The next prime is 2688166693. The reversal of 2688166672 is 2766618862.

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 3 ways as a sum of consecutive naturals, for example, 1952922 + ... + 1954297.

It is an arithmetic number, because the mean of its divisors is an integer number (266472404).

Almost surely, 2^2688166672 is an apocalyptic number.

It is an amenable number.

2688166672 is a deficient number, since it is larger than the sum of its proper divisors (2641281408).

2688166672 is a wasteful number, since it uses less digits than its factorization.

2688166672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907270 (or 3907264 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 2688166672 is about 51847.5329403435. The cubic root of 2688166672 is about 1390.4393952730.

The spelling of 2688166672 in words is "two billion, six hundred eighty-eight million, one hundred sixty-six thousand, six hundred seventy-two".