680736528 has 80 divisors (see below), whose sum is σ = 1962642240. Its totient is φ = 225904896.

The previous prime is 680736523. The next prime is 680736547. The reversal of 680736528 is 825637086.

It is not an unprimeable number, because it can be changed into a prime (680736523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97275 + ... + 104037.

It is an arithmetic number, because the mean of its divisors is an integer number (24533028).

Almost surely, 2^680736528 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 680736528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (981321120).

680736528 is an abundant number, since it is smaller than the sum of its proper divisors (1281905712).

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

680736528 is a wasteful number, since it uses less digits than its factorization.

680736528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 7001 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 680736528 is about 26090.9280785487. The cubic root of 680736528 is about 879.6833089091.

The spelling of 680736528 in words is "six hundred eighty million, seven hundred thirty-six thousand, five hundred twenty-eight".