687107 has 2 divisors, whose sum is σ = 687108. Its totient is φ = 687106.

The previous prime is 687101. The next prime is 687109. The reversal of 687107 is 701786.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687107 is a prime.

Together with 687109, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 687107.

It is not a weakly prime, because it can be changed into another prime (687101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343553 + 343554.

It is an arithmetic number, because the mean of its divisors is an integer number (343554).

2⁶⁸⁷¹⁰⁷ is an apocalyptic number.

687107 is a deficient number, since it is larger than the sum of its proper divisors (1).

687107 is an equidigital number, since it uses as much as digits as its factorization.

687107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 687107 is about 828.9191757946. The cubic root of 687107 is about 88.2418878820.

The spelling of 687107 in words is "six hundred eighty-seven thousand, one hundred seven".