680870 has 8 divisors (see below), whose sum is σ = 1225584. Its totient is φ = 272344.

The previous prime is 680861. The next prime is 680873. The reversal of 680870 is 78086.

680870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680870.

It is not an unprimeable number, because it can be changed into a prime (680873) 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, 34034 + ... + 34053.

It is an arithmetic number, because the mean of its divisors is an integer number (153198).

2⁶⁸⁰⁸⁷⁰ is an apocalyptic number.

680870 is a deficient number, since it is larger than the sum of its proper divisors (544714).

680870 is a wasteful number, since it uses less digits than its factorization.

680870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68094.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 680870 is about 825.1484714886. The cubic root of 680870 is about 87.9740798316.

The spelling of 680870 in words is "six hundred eighty thousand, eight hundred seventy".