679847 has 16 divisors (see below), whose sum is σ = 855360. Its totient is φ = 526848.

The previous prime is 679843. The next prime is 679859. The reversal of 679847 is 748976.

It is not a de Polignac number, because 679847 - 2² = 679843 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 (679843) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3353 + ... + 3549.

It is an arithmetic number, because the mean of its divisors is an integer number (53460).

2⁶⁷⁹⁸⁴⁷ is an apocalyptic number.

679847 is a deficient number, since it is larger than the sum of its proper divisors (175513).

679847 is a wasteful number, since it uses less digits than its factorization.

679847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its digits is 84672, while the sum is 41.

The square root of 679847 is about 824.5283500281. The cubic root of 679847 is about 87.9299977040.

The spelling of 679847 in words is "six hundred seventy-nine thousand, eight hundred forty-seven".