680363520 has 80 divisors (see below), whose sum is σ = 2175061680. Its totient is φ = 181428224.

The previous prime is 680363507. The next prime is 680363527. The reversal of 680363520 is 25363086.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680363527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36615 + ... + 51974.

It is an arithmetic number, because the mean of its divisors is an integer number (27188271).

Almost surely, 2^680363520 is an apocalyptic number.

680363520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680363520 is an abundant number, since it is smaller than the sum of its proper divisors (1494698160).

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

680363520 is an equidigital number, since it uses as much as digits as its factorization.

680363520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88615 (or 88599 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 680363520 is about 26083.7788673344. The cubic root of 680363520 is about 879.5226060777.

The spelling of 680363520 in words is "six hundred eighty million, three hundred sixty-three thousand, five hundred twenty".