680371650 has 240 divisors, whose sum is σ = 2190824064. Its totient is φ = 153342720.

The previous prime is 680371633. The next prime is 680371669. The reversal of 680371650 is 56173086.

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 2919934 + ... + 2920166.

Almost surely, 2^680371650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680371650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095412032).

680371650 is an abundant number, since it is smaller than the sum of its proper divisors (1510452414).

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

680371650 is a wasteful number, since it uses less digits than its factorization.

680371650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 680371650 is about 26083.9347108522. The cubic root of 680371650 is about 879.5261093472.

The spelling of 680371650 in words is "six hundred eighty million, three hundred seventy-one thousand, six hundred fifty".