686293 has 2 divisors, whose sum is σ = 686294. Its totient is φ = 686292.

The previous prime is 686269. The next prime is 686317. The reversal of 686293 is 392686.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (686269) and next prime (686317).

It can be written as a sum of positive squares in only one way, i.e., 675684 + 10609 = 822^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 686293 - 2⁹ = 685781 is a prime.

686293 is a lucky number.

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686593) 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, 343146 + 343147.

It is an arithmetic number, because the mean of its divisors is an integer number (343147).

2⁶⁸⁶²⁹³ is an apocalyptic number.

It is an amenable number.

686293 is a deficient number, since it is larger than the sum of its proper divisors (1).

686293 is an equidigital number, since it uses as much as digits as its factorization.

686293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 686293 is about 828.4280294630. The cubic root of 686293 is about 88.2070280614.

It can be divided in two parts, 686 and 293, that added together give a palindrome (979).

The spelling of 686293 in words is "six hundred eighty-six thousand, two hundred ninety-three".