2688862321 has 2 divisors, whose sum is σ = 2688862322. Its totient is φ = 2688862320.

The previous prime is 2688862289. The next prime is 2688862343. The reversal of 2688862321 is 1232688862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2075804721 + 613057600 = 45561^2 + 24760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2688862321 - 2⁵ = 2688862289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2688862381) by changing a digit.

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 as a sum of consecutive naturals, namely, 1344431160 + 1344431161.

It is an arithmetic number, because the mean of its divisors is an integer number (1344431161).

Almost surely, 2^2688862321 is an apocalyptic number.

It is an amenable number.

2688862321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688862321 is an equidigital number, since it uses as much as digits as its factorization.

2688862321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 46.

The square root of 2688862321 is about 51854.2411090935. The cubic root of 2688862321 is about 1390.5593251321.

The spelling of 2688862321 in words is "two billion, six hundred eighty-eight million, eight hundred sixty-two thousand, three hundred twenty-one".