2605682687 has 2 divisors, whose sum is σ = 2605682688. Its totient is φ = 2605682686.

The previous prime is 2605682593. The next prime is 2605682689. The reversal of 2605682687 is 7862865062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2605682687 - 2¹⁴ = 2605666303 is a prime.

Together with 2605682689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605682689) 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, 1302841343 + 1302841344.

It is an arithmetic number, because the mean of its divisors is an integer number (1302841344).

Almost surely, 2^2605682687 is an apocalyptic number.

2605682687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605682687 is an equidigital number, since it uses as much as digits as its factorization.

2605682687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 2605682687 is about 51045.8880518304. Note that the first 3 decimals coincide. The cubic root of 2605682687 is about 1376.0699439880.

The spelling of 2605682687 in words is "two billion, six hundred five million, six hundred eighty-two thousand, six hundred eighty-seven".