679808 has 32 divisors (see below), whose sum is σ = 1395360. Its totient is φ = 329728.

The previous prime is 679807. The next prime is 679823. The reversal of 679808 is 808976.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679807) 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, 5960 + ... + 6072.

It is an arithmetic number, because the mean of its divisors is an integer number (43605).

2⁶⁷⁹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697680).

679808 is an abundant number, since it is smaller than the sum of its proper divisors (715552).

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

679808 is a wasteful number, since it uses less digits than its factorization.

679808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 679808 is about 824.5046998047. The cubic root of 679808 is about 87.9283162788.

The spelling of 679808 in words is "six hundred seventy-nine thousand, eight hundred eight".