679858 has 8 divisors (see below), whose sum is σ = 1073520. Its totient is φ = 322020.

The previous prime is 679843. The next prime is 679859. The reversal of 679858 is 858976.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (679859) 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, 8908 + ... + 8983.

It is an arithmetic number, because the mean of its divisors is an integer number (134190).

2⁶⁷⁹⁸⁵⁸ is an apocalyptic number.

679858 is a deficient number, since it is larger than the sum of its proper divisors (393662).

679858 is a wasteful number, since it uses less digits than its factorization.

679858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17912.

The product of its digits is 120960, while the sum is 43.

The square root of 679858 is about 824.5350204812. The cubic root of 679858 is about 87.9304719404.

The spelling of 679858 in words is "six hundred seventy-nine thousand, eight hundred fifty-eight".