6809488686 has 576 divisors, whose sum is σ = 22085167104. Its totient is φ = 1468938240.

The previous prime is 6809488681. The next prime is 6809488709. The reversal of 6809488686 is 6868849086.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809488681) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 144882715 + ... + 144882761.

It is an arithmetic number, because the mean of its divisors is an integer number (38342304).

Almost surely, 2^6809488686 is an apocalyptic number.

6809488686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6809488686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11042583552).

6809488686 is an abundant number, since it is smaller than the sum of its proper divisors (15275678418).

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

6809488686 is a wasteful number, since it uses less digits than its factorization.

6809488686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The square root of 6809488686 is about 82519.6260655609. The cubic root of 6809488686 is about 1895.4172737190.

The spelling of 6809488686 in words is "six billion, eight hundred nine million, four hundred eighty-eight thousand, six hundred eighty-six".