679798 has 16 divisors (see below), whose sum is σ = 1186560. Its totient is φ = 286056.

The previous prime is 679793. The next prime is 679807. The reversal of 679798 is 897976.

679798 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679793) by changing a digit.

679798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (74160).

2⁶⁷⁹⁷⁹⁸ is an apocalyptic number.

679798 is a deficient number, since it is larger than the sum of its proper divisors (506762).

679798 is a wasteful number, since it uses less digits than its factorization.

679798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891.

The product of its digits is 190512, while the sum is 46.

The square root of 679798 is about 824.4986355356. The cubic root of 679798 is about 87.9278851338.

The spelling of 679798 in words is "six hundred seventy-nine thousand, seven hundred ninety-eight".