680218620 has 96 divisors (see below), whose sum is σ = 2122848000. Its totient is φ = 161731584.

The previous prime is 680218613. The next prime is 680218621. The reversal of 680218620 is 26812086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680218621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1831 + ... + 36929.

It is an arithmetic number, because the mean of its divisors is an integer number (22113000).

Almost surely, 2^680218620 is an apocalyptic number.

680218620 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 680218620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061424000).

680218620 is an abundant number, since it is smaller than the sum of its proper divisors (1442629380).

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

680218620 is a wasteful number, since it uses less digits than its factorization.

680218620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35147 (or 35145 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 680218620 is about 26081.0011310916. The cubic root of 680218620 is about 879.4601630502.

The spelling of 680218620 in words is "six hundred eighty million, two hundred eighteen thousand, six hundred twenty".