686296688243 has 2 divisors, whose sum is σ = 686296688244. Its totient is φ = 686296688242.

The previous prime is 686296688219. The next prime is 686296688267. The reversal of 686296688243 is 342886692686.

It is a balanced prime because it is at equal distance from previous prime (686296688219) and next prime (686296688267).

It is a cyclic number.

It is not a de Polignac number, because 686296688243 - 2¹⁸ = 686296426099 is a prime.

It is not a weakly prime, because it can be changed into another prime (686296688843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343148344121 + 343148344122.

It is an arithmetic number, because the mean of its divisors is an integer number (343148344122).

Almost surely, 2^686296688243 is an apocalyptic number.

686296688243 is a deficient number, since it is larger than the sum of its proper divisors (1).

686296688243 is an equidigital number, since it uses as much as digits as its factorization.

686296688243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 286654464, while the sum is 68.

The spelling of 686296688243 in words is "six hundred eighty-six billion, two hundred ninety-six million, six hundred eighty-eight thousand, two hundred forty-three".