686044064760 has 128 divisors (see below), whose sum is σ = 2120975599680. Its totient is φ = 177392775168.

The previous prime is 686044064687. The next prime is 686044064767. The reversal of 686044064760 is 67460440686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686044064767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1037244 + ... + 1564596.

Almost surely, 2^686044064760 is an apocalyptic number.

686044064760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686044064760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060487799840).

686044064760 is an abundant number, since it is smaller than the sum of its proper divisors (1434931534920).

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

686044064760 is a wasteful number, since it uses less digits than its factorization.

686044064760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527697 (or 527693 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 686044064760 in words is "six hundred eighty-six billion, forty-four million, sixty-four thousand, seven hundred sixty".