2680820563 has 2 divisors, whose sum is σ = 2680820564. Its totient is φ = 2680820562.

The previous prime is 2680820473. The next prime is 2680820633. The reversal of 2680820563 is 3650280862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2680820563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2680820063) 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 as a sum of consecutive naturals, namely, 1340410281 + 1340410282.

It is an arithmetic number, because the mean of its divisors is an integer number (1340410282).

Almost surely, 2^2680820563 is an apocalyptic number.

2680820563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2680820563 is an equidigital number, since it uses as much as digits as its factorization.

2680820563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2680820563 is about 51776.6410942232. The cubic root of 2680820563 is about 1389.1716616369.

The spelling of 2680820563 in words is "two billion, six hundred eighty million, eight hundred twenty thousand, five hundred sixty-three".