679718 has 12 divisors (see below), whose sum is σ = 1104588. Its totient is φ = 313560.

The previous prime is 679709. The next prime is 679733. The reversal of 679718 is 817976.

It is a happy 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 679718.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 668 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (92049).

2⁶⁷⁹⁷¹⁸ is an apocalyptic number.

679718 is a deficient number, since it is larger than the sum of its proper divisors (424870).

679718 is a wasteful number, since it uses less digits than its factorization.

679718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2026 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 679718 is about 824.4501197768. The cubic root of 679718 is about 87.9244358215.

The spelling of 679718 in words is "six hundred seventy-nine thousand, seven hundred eighteen".