685711360 has 56 divisors (see below), whose sum is σ = 1645705116. Its totient is φ = 274268160.

The previous prime is 685711307. The next prime is 685711363. The reversal of 685711360 is 63117586.

It can be written as a sum of positive squares in 2 ways, for example, as 645566464 + 40144896 = 25408^2 + 6336^2 .

It is not an unprimeable number, because it can be changed into a prime (685711363) 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, 32590 + ... + 49330.

Almost surely, 2^685711360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685711360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822852558).

685711360 is an abundant number, since it is smaller than the sum of its proper divisors (959993756).

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

685711360 is an equidigital number, since it uses as much as digits as its factorization.

685711360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16772 (or 16748 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 685711360 is about 26186.0909644796. The cubic root of 685711360 is about 881.8210224677.

The spelling of 685711360 in words is "six hundred eighty-five million, seven hundred eleven thousand, three hundred sixty".