686808711 has 24 divisors (see below), whose sum is σ = 1035899280. Its totient is φ = 437934336.

The previous prime is 686808677. The next prime is 686808737. The reversal of 686808711 is 117808686.

It is not a de Polignac number, because 686808711 - 2⁷ = 686808583 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686800711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15631 + ... + 40223.

It is an arithmetic number, because the mean of its divisors is an integer number (43162470).

Almost surely, 2^686808711 is an apocalyptic number.

686808711 is a deficient number, since it is larger than the sum of its proper divisors (349090569).

686808711 is a wasteful number, since it uses less digits than its factorization.

686808711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24735 (or 24732 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 686808711 is about 26207.0355248357. The cubic root of 686808711 is about 882.2911675396.

The spelling of 686808711 in words is "six hundred eighty-six million, eight hundred eight thousand, seven hundred eleven".