2680609663 has 2 divisors, whose sum is σ = 2680609664. Its totient is φ = 2680609662.

The previous prime is 2680609619. The next prime is 2680609709. The reversal of 2680609663 is 3669060862.

It is a happy number.

It is an a-pointer prime, because the next prime (2680609709) can be obtained adding 2680609663 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2680609663 - 2²¹ = 2678512511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2680609163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340304831 + 1340304832.

It is an arithmetic number, because the mean of its divisors is an integer number (1340304832).

Almost surely, 2^2680609663 is an apocalyptic number.

2680609663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2680609663 is an equidigital number, since it uses as much as digits as its factorization.

2680609663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 2680609663 is about 51774.6044214729. The cubic root of 2680609663 is about 1389.1352319966.

The spelling of 2680609663 in words is "two billion, six hundred eighty million, six hundred nine thousand, six hundred sixty-three".