686290080 has 144 divisors (see below), whose sum is σ = 2514849120. Its totient is φ = 156860928.

The previous prime is 686290069. The next prime is 686290141. The reversal of 686290080 is 80092686.

686290080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8931 + ... + 38109.

It is an arithmetic number, because the mean of its divisors is an integer number (17464230).

Almost surely, 2^686290080 is an apocalyptic number.

686290080 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 686290080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257424560).

686290080 is an abundant number, since it is smaller than the sum of its proper divisors (1828559040).

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

686290080 is a wasteful number, since it uses less digits than its factorization.

686290080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29211 (or 29196 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 686290080 is about 26197.1387750647. The cubic root of 686290080 is about 882.0690296187.

The spelling of 686290080 in words is "six hundred eighty-six million, two hundred ninety thousand, eighty".