680857038 has 48 divisors (see below), whose sum is σ = 1567116720. Its totient is φ = 212898048.

The previous prime is 680857007. The next prime is 680857043. The reversal of 680857038 is 830758086.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 680856984 and 680857002.

It is a congruent number.

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, 93493 + ... + 100511.

It is an arithmetic number, because the mean of its divisors is an integer number (32648265).

Almost surely, 2^680857038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680857038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783558360).

680857038 is an abundant number, since it is smaller than the sum of its proper divisors (886259682).

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

680857038 is a wasteful number, since it uses less digits than its factorization.

680857038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7361 (or 7358 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 680857038 is about 26093.2373997555. The cubic root of 680857038 is about 879.7352156190.

The spelling of 680857038 in words is "six hundred eighty million, eight hundred fifty-seven thousand, thirty-eight".