686827480908 has 48 divisors (see below), whose sum is σ = 1696933929600. Its totient is φ = 215466902784.

The previous prime is 686827480903. The next prime is 686827480909. The reversal of 686827480908 is 809084728686.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (686827480903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7112235 + ... + 7208157.

It is an arithmetic number, because the mean of its divisors is an integer number (35352790200).

Almost surely, 2^686827480908 is an apocalyptic number.

686827480908 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

686827480908 is an abundant number, since it is smaller than the sum of its proper divisors (1010106448692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686827480908 is a wasteful number, since it uses less digits than its factorization.

686827480908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131046 (or 131044 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 66.

The spelling of 686827480908 in words is "six hundred eighty-six billion, eight hundred twenty-seven million, four hundred eighty thousand, nine hundred eight".