687100108699 has 2 divisors, whose sum is σ = 687100108700. Its totient is φ = 687100108698.

The previous prime is 687100108697. The next prime is 687100108789. The reversal of 687100108699 is 996801001786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687100108699 - 2¹ = 687100108697 is a prime.

Together with 687100108697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (687100108697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343550054349 + 343550054350.

It is an arithmetic number, because the mean of its divisors is an integer number (343550054350).

Almost surely, 2^687100108699 is an apocalyptic number.

687100108699 is a deficient number, since it is larger than the sum of its proper divisors (1).

687100108699 is an equidigital number, since it uses as much as digits as its factorization.

687100108699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 687100108699 in words is "six hundred eighty-seven billion, one hundred million, one hundred eight thousand, six hundred ninety-nine".