680340650 has 48 divisors (see below), whose sum is σ = 1392018048. Its totient is φ = 247372400.

The previous prime is 680340649. The next prime is 680340659. The reversal of 680340650 is 56043086.

It is not an unprimeable number, because it can be changed into a prime (680340659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61439 + ... + 71661.

It is an arithmetic number, because the mean of its divisors is an integer number (29000376).

Almost surely, 2^680340650 is an apocalyptic number.

680340650 is an abundant number, since it is smaller than the sum of its proper divisors (711677398).

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

680340650 is a wasteful number, since it uses less digits than its factorization.

680340650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10268 (or 10241 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 680340650 is about 26083.3404685826. The cubic root of 680340650 is about 879.5127510973.

The spelling of 680340650 in words is "six hundred eighty million, three hundred forty thousand, six hundred fifty".