9687686587 has 2 divisors, whose sum is σ = 9687686588. Its totient is φ = 9687686586.

The previous prime is 9687686563. The next prime is 9687686597. The reversal of 9687686587 is 7856867869.

9687686587 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (7856867869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9687686587 - 2¹⁵ = 9687653819 is a prime.

It is not a weakly prime, because it can be changed into another prime (9687686557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4843843293 + 4843843294.

It is an arithmetic number, because the mean of its divisors is an integer number (4843843294).

Almost surely, 2^9687686587 is an apocalyptic number.

9687686587 is a deficient number, since it is larger than the sum of its proper divisors (1).

9687686587 is an equidigital number, since it uses as much as digits as its factorization.

9687686587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243855360, while the sum is 70.

The square root of 9687686587 is about 98426.0462834914. The cubic root of 9687686587 is about 2131.7684320198.

The spelling of 9687686587 in words is "nine billion, six hundred eighty-seven million, six hundred eighty-six thousand, five hundred eighty-seven".