680730 has 16 divisors (see below), whose sum is σ = 1633824. Its totient is φ = 181520.

The previous prime is 680707. The next prime is 680749. The reversal of 680730 is 37086.

It is a self number, because there is not a number n which added to its sum of digits gives 680730.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11316 + ... + 11375.

It is an arithmetic number, because the mean of its divisors is an integer number (102114).

2⁶⁸⁰⁷³⁰ is an apocalyptic number.

680730 is an abundant number, since it is smaller than the sum of its proper divisors (953094).

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

680730 is a wasteful number, since it uses less digits than its factorization.

680730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22701.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 680730 is about 825.0636339095. The cubic root of 680730 is about 87.9680496959.

The spelling of 680730 in words is "six hundred eighty thousand, seven hundred thirty".