686359 has 2 divisors, whose sum is σ = 686360. Its totient is φ = 686358.

The previous prime is 686353. The next prime is 686363. The reversal of 686359 is 953686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686359 - 2¹¹ = 684311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343179 + 343180.

It is an arithmetic number, because the mean of its divisors is an integer number (343180).

2⁶⁸⁶³⁵⁹ is an apocalyptic number.

686359 is a deficient number, since it is larger than the sum of its proper divisors (1).

686359 is an equidigital number, since it uses as much as digits as its factorization.

686359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 686359 is about 828.4678629856. The cubic root of 686359 is about 88.2098555599.

It can be divided in two parts, 68635 and 9, that added together give a square (68644 = 262²).

The spelling of 686359 in words is "six hundred eighty-six thousand, three hundred fifty-nine".