680661583250 has 64 divisors (see below), whose sum is σ = 1393435630080. Its totient is φ = 246907728000.

The previous prime is 680661583213. The next prime is 680661583253. The reversal of 680661583250 is 52385166086.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (680661583253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 822167 + ... + 1427333.

It is an arithmetic number, because the mean of its divisors is an integer number (21772431720).

Almost surely, 2^680661583250 is an apocalyptic number.

680661583250 is an abundant number, since it is smaller than the sum of its proper divisors (712774046830).

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

680661583250 is a wasteful number, since it uses less digits than its factorization.

680661583250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605604 (or 605594 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 680661583250 in words is "six hundred eighty billion, six hundred sixty-one million, five hundred eighty-three thousand, two hundred fifty".