680545732608 has 960 divisors, whose sum is σ = 2461333754880. Its totient is φ = 183148314624.

The previous prime is 680545732597. The next prime is 680545732649. The reversal of 680545732608 is 806237545086.

680545732608 is a `hidden beast` number, since 6 + 8 + 0 + 5 + 4 + 573 + 2 + 60 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2216761191 + ... + 2216761497.

It is an arithmetic number, because the mean of its divisors is an integer number (2563889328).

Almost surely, 2^680545732608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680545732608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230666877440).

680545732608 is an abundant number, since it is smaller than the sum of its proper divisors (1780788022272).

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

680545732608 is a wasteful number, since it uses less digits than its factorization.

680545732608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 680545732608 in words is "six hundred eighty billion, five hundred forty-five million, seven hundred thirty-two thousand, six hundred eight".