686545062077167 has 2 divisors, whose sum is σ = 686545062077168. Its totient is φ = 686545062077166.

The previous prime is 686545062077153. The next prime is 686545062077207. The reversal of 686545062077167 is 761770260545686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686545062077167 - 2³⁹ = 685995306263279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686545062077096 and 686545062077105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686545062077107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343272531038583 + 343272531038584.

It is an arithmetic number, because the mean of its divisors is an integer number (343272531038584).

Almost surely, 2^{686545062077167} is an apocalyptic number.

686545062077167 is a deficient number, since it is larger than the sum of its proper divisors (1).

686545062077167 is an equidigital number, since it uses as much as digits as its factorization.

686545062077167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 711244800, while the sum is 70.

The spelling of 686545062077167 in words is "six hundred eighty-six trillion, five hundred forty-five billion, sixty-two million, seventy-seven thousand, one hundred sixty-seven".