680487587028720 has 60 divisors (see below), whose sum is σ = 2285304146440536. Its totient is φ = 181463356540800.

The previous prime is 680487587028631. The next prime is 680487587028721. The reversal of 680487587028720 is 27820785784086.

680487587028720 is a `hidden beast` number, since 6 + 8 + 0 + 487 + 5 + 8 + 70 + 2 + 8 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×680487587028720² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680487587028721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472560823606 + ... + 472560825045.

Almost surely, 2^{680487587028720} is an apocalyptic number.

680487587028720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680487587028720 is an abundant number, since it is smaller than the sum of its proper divisors (1604816559411816).

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

680487587028720 is a wasteful number, since it uses less digits than its factorization.

680487587028720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945121648670 (or 945121648661 counting only the distinct ones).

The product of its (nonzero) digits is 674365440, while the sum is 72.

The spelling of 680487587028720 in words is "six hundred eighty trillion, four hundred eighty-seven billion, five hundred eighty-seven million, twenty-eight thousand, seven hundred twenty".