680630850 has 168 divisors, whose sum is σ = 1932144192. Its totient is φ = 178264800.

The previous prime is 680630849. The next prime is 680630851. The reversal of 680630850 is 58036086.

It is an interprime number because it is at equal distance from previous prime (680630849) and next prime (680630851).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680630851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 2587819 + ... + 2588081.

Almost surely, 2^680630850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680630850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966072096).

680630850 is an abundant number, since it is smaller than the sum of its proper divisors (1251513342).

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

680630850 is a wasteful number, since it uses less digits than its factorization.

680630850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 680630850 is about 26088.9028132653. The cubic root of 680630850 is about 879.6377856756.

The spelling of 680630850 in words is "six hundred eighty million, six hundred thirty thousand, eight hundred fifty".