686602868087 has 2 divisors, whose sum is σ = 686602868088. Its totient is φ = 686602868086.

The previous prime is 686602868033. The next prime is 686602868113. The reversal of 686602868087 is 780868206686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686602868087 - 2⁶ = 686602868023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686602865087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343301434043 + 343301434044.

It is an arithmetic number, because the mean of its divisors is an integer number (343301434044).

Almost surely, 2^686602868087 is an apocalyptic number.

686602868087 is a deficient number, since it is larger than the sum of its proper divisors (1).

686602868087 is an equidigital number, since it uses as much as digits as its factorization.

686602868087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74317824, while the sum is 65.

The spelling of 686602868087 in words is "six hundred eighty-six billion, six hundred two million, eight hundred sixty-eight thousand, eighty-seven".