680620 has 12 divisors (see below), whose sum is σ = 1429344. Its totient is φ = 272240.

The previous prime is 680611. The next prime is 680623. The reversal of 680620 is 26086.

It is a junction number, because it is equal to n+sod(n) for n = 680591 and 680600.

It is not an unprimeable number, because it can be changed into a prime (680623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16996 + ... + 17035.

It is an arithmetic number, because the mean of its divisors is an integer number (119112).

2⁶⁸⁰⁶²⁰ is an apocalyptic number.

It is an amenable number.

680620 is an abundant number, since it is smaller than the sum of its proper divisors (748724).

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

680620 is a wasteful number, since it uses less digits than its factorization.

680620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34040 (or 34038 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 680620 is about 824.9969696914. The cubic root of 680620 is about 87.9633111521.

The spelling of 680620 in words is "six hundred eighty thousand, six hundred twenty".