686027 has 2 divisors, whose sum is σ = 686028. Its totient is φ = 686026.

The previous prime is 686011. The next prime is 686029. The reversal of 686027 is 720686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686027 - 2⁴ = 686011 is a prime.

Together with 686029, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686027.

It is not a weakly prime, because it can be changed into another prime (686029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343013 + 343014.

It is an arithmetic number, because the mean of its divisors is an integer number (343014).

2⁶⁸⁶⁰²⁷ is an apocalyptic number.

686027 is a deficient number, since it is larger than the sum of its proper divisors (1).

686027 is an equidigital number, since it uses as much as digits as its factorization.

686027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 686027 is about 828.2674688771. The cubic root of 686027 is about 88.1956305478.

The spelling of 686027 in words is "six hundred eighty-six thousand, twenty-seven".