686896159 has 2 divisors, whose sum is σ = 686896160. Its totient is φ = 686896158.

The previous prime is 686896139. The next prime is 686896187. The reversal of 686896159 is 951698686.

686896159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686896159 - 2¹³ = 686887967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686896139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343448079 + 343448080.

It is an arithmetic number, because the mean of its divisors is an integer number (343448080).

Almost surely, 2^686896159 is an apocalyptic number.

686896159 is a deficient number, since it is larger than the sum of its proper divisors (1).

686896159 is an equidigital number, since it uses as much as digits as its factorization.

686896159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 58.

The square root of 686896159 is about 26208.7038786736. The cubic root of 686896159 is about 882.3286118927.

The spelling of 686896159 in words is "six hundred eighty-six million, eight hundred ninety-six thousand, one hundred fifty-nine".