686353 has 2 divisors, whose sum is σ = 686354. Its totient is φ = 686352.

The previous prime is 686339. The next prime is 686359. The reversal of 686353 is 353686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652864 + 33489 = 808^2 + 183^2 .

686353 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 686353 - 2⁵ = 686321 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343176 + 343177.

It is an arithmetic number, because the mean of its divisors is an integer number (343177).

2⁶⁸⁶³⁵³ is an apocalyptic number.

It is an amenable number.

686353 is a deficient number, since it is larger than the sum of its proper divisors (1).

686353 is an equidigital number, since it uses as much as digits as its factorization.

686353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 686353 is about 828.4642418355. The cubic root of 686353 is about 88.2095985221.

The spelling of 686353 in words is "six hundred eighty-six thousand, three hundred fifty-three".