2688275321 has 4 divisors (see below), whose sum is σ = 2780974500. Its totient is φ = 2595576144.

The previous prime is 2688275243. The next prime is 2688275323. The reversal of 2688275321 is 1235728862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1897822096 + 790453225 = 43564^2 + 28115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2688275321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688275323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46349546 + ... + 46349603.

It is an arithmetic number, because the mean of its divisors is an integer number (695243625).

Almost surely, 2^2688275321 is an apocalyptic number.

It is an amenable number.

2688275321 is a deficient number, since it is larger than the sum of its proper divisors (92699179).

2688275321 is an equidigital number, since it uses as much as digits as its factorization.

2688275321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92699178.

The product of its digits is 322560, while the sum is 44.

The square root of 2688275321 is about 51848.5807038148. The cubic root of 2688275321 is about 1390.4581277194.

The spelling of 2688275321 in words is "two billion, six hundred eighty-eight million, two hundred seventy-five thousand, three hundred twenty-one".