686107863 has 24 divisors (see below), whose sum is σ = 1142657568. Its totient is φ = 388588032.

The previous prime is 686107819. The next prime is 686107867. The reversal of 686107863 is 368701686.

It is not a de Polignac number, because 686107863 - 2⁹ = 686107351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686107867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41070 + ... + 55307.

It is an arithmetic number, because the mean of its divisors is an integer number (47610732).

Almost surely, 2^686107863 is an apocalyptic number.

686107863 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

686107863 is a deficient number, since it is larger than the sum of its proper divisors (456549705).

686107863 is a wasteful number, since it uses less digits than its factorization.

686107863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96503 (or 96500 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 686107863 is about 26193.6607407212. The cubic root of 686107863 is about 881.9909566074.

The spelling of 686107863 in words is "six hundred eighty-six million, one hundred seven thousand, eight hundred sixty-three".