686259814463 has 4 divisors (see below), whose sum is σ = 686261471280. Its totient is φ = 686258157648.

The previous prime is 686259814459. The next prime is 686259814517. The reversal of 686259814463 is 364418952686.

686259814463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 828408²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 686259814463 - 2² = 686259814459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686259814396 and 686259814405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686259814763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414203 + ... + 1242611.

It is an arithmetic number, because the mean of its divisors is an integer number (171565367820).

Almost surely, 2^686259814463 is an apocalyptic number.

686259814463 is a deficient number, since it is larger than the sum of its proper divisors (1656817).

686259814463 is an equidigital number, since it uses as much as digits as its factorization.

686259814463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656816.

The product of its digits is 59719680, while the sum is 62.

The spelling of 686259814463 in words is "six hundred eighty-six billion, two hundred fifty-nine million, eight hundred fourteen thousand, four hundred sixty-three".