686026340323 has 2 divisors, whose sum is σ = 686026340324. Its totient is φ = 686026340322.

The previous prime is 686026340309. The next prime is 686026340359. The reversal of 686026340323 is 323043620686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686026340323 - 2⁹ = 686026339811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 686026340323.

It is not a weakly prime, because it can be changed into another prime (686026343323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343013170161 + 343013170162.

It is an arithmetic number, because the mean of its divisors is an integer number (343013170162).

Almost surely, 2^686026340323 is an apocalyptic number.

686026340323 is a deficient number, since it is larger than the sum of its proper divisors (1).

686026340323 is an equidigital number, since it uses as much as digits as its factorization.

686026340323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 686026340323 in words is "six hundred eighty-six billion, twenty-six million, three hundred forty thousand, three hundred twenty-three".