680249750 has 16 divisors (see below), whose sum is σ = 1273428000. Its totient is φ = 272099800.

The previous prime is 680249743. The next prime is 680249789. The reversal of 680249750 is 57942086.

It is a junction number, because it is equal to n+sod(n) for n = 680249698 and 680249707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360250 + ... + 1360749.

It is an arithmetic number, because the mean of its divisors is an integer number (79589250).

Almost surely, 2^680249750 is an apocalyptic number.

680249750 is a deficient number, since it is larger than the sum of its proper divisors (593178250).

680249750 is a wasteful number, since it uses less digits than its factorization.

680249750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721016 (or 2721006 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 680249750 is about 26081.5979188393. The cubic root of 680249750 is about 879.4735789219.

The spelling of 680249750 in words is "six hundred eighty million, two hundred forty-nine thousand, seven hundred fifty".