681280080 has 160 divisors (see below), whose sum is σ = 2313601920. Its totient is φ = 164812800.

The previous prime is 681280063. The next prime is 681280081. The reversal of 681280080 is 80082186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681280081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182230 + ... + 185930.

It is an arithmetic number, because the mean of its divisors is an integer number (14460012).

Almost surely, 2^681280080 is an apocalyptic number.

681280080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681280080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156800960).

681280080 is an abundant number, since it is smaller than the sum of its proper divisors (1632321840).

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

681280080 is a wasteful number, since it uses less digits than its factorization.

681280080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 681280080 is about 26101.3424942090. The cubic root of 681280080 is about 879.9173820509.

The spelling of 681280080 in words is "six hundred eighty-one million, two hundred eighty thousand, eighty".