686339 has 2 divisors, whose sum is σ = 686340. Its totient is φ = 686338.

The previous prime is 686333. The next prime is 686353. The reversal of 686339 is 933686.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686339 is a prime.

It is a super-2 number, since 2×686339² = 942122445842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686299 and 686308.

It is not a weakly prime, because it can be changed into another prime (686333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343169 + 343170.

It is an arithmetic number, because the mean of its divisors is an integer number (343170).

2⁶⁸⁶³³⁹ is an apocalyptic number.

686339 is a deficient number, since it is larger than the sum of its proper divisors (1).

686339 is an equidigital number, since it uses as much as digits as its factorization.

686339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 686339 is about 828.4557924235. The cubic root of 686339 is about 88.2089987613.

The spelling of 686339 in words is "six hundred eighty-six thousand, three hundred thirty-nine".