680479 has 4 divisors (see below), whose sum is σ = 685584. Its totient is φ = 675376.

The previous prime is 680453. The next prime is 680489. The reversal of 680479 is 974086.

680479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680489) 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, 2347 + ... + 2620.

It is an arithmetic number, because the mean of its divisors is an integer number (171396).

2⁶⁸⁰⁴⁷⁹ is an apocalyptic number.

680479 is a deficient number, since it is larger than the sum of its proper divisors (5105).

680479 is a wasteful number, since it uses less digits than its factorization.

680479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 680479 is about 824.9115104058. The cubic root of 680479 is about 87.9572364539.

The spelling of 680479 in words is "six hundred eighty thousand, four hundred seventy-nine".