680636250 has 320 divisors, whose sum is σ = 2243281920. Its totient is φ = 149688000.

The previous prime is 680636249. The next prime is 680636261. The reversal of 680636250 is 52636086.

680636250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10158717 + ... + 10158783.

It is an arithmetic number, because the mean of its divisors is an integer number (7010256).

Almost surely, 2^680636250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680636250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121640960).

680636250 is an abundant number, since it is smaller than the sum of its proper divisors (1562645670).

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

680636250 is a wasteful number, since it uses less digits than its factorization.

680636250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 680636250 is about 26089.0063053387. The cubic root of 680636250 is about 879.6401119643.

The spelling of 680636250 in words is "six hundred eighty million, six hundred thirty-six thousand, two hundred fifty".