680208630 has 64 divisors (see below), whose sum is σ = 1704810240. Its totient is φ = 173473664.

The previous prime is 680208619. The next prime is 680208689. The reversal of 680208630 is 36802086.

It is a junction number, because it is equal to n+sod(n) for n = 680208591 and 680208600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89437 + ... + 96743.

It is an arithmetic number, because the mean of its divisors is an integer number (26637660).

Almost surely, 2^680208630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680208630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852405120).

680208630 is an abundant number, since it is smaller than the sum of its proper divisors (1024601610).

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

680208630 is a wasteful number, since it uses less digits than its factorization.

680208630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 680208630 is about 26080.8096116666. The cubic root of 680208630 is about 879.4558576451.

The spelling of 680208630 in words is "six hundred eighty million, two hundred eight thousand, six hundred thirty".