679811 has 8 divisors (see below), whose sum is σ = 774144. Its totient is φ = 590920.

The previous prime is 679807. The next prime is 679823. The reversal of 679811 is 118976.

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

It is not a de Polignac number, because 679811 - 2² = 679807 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 (679891) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2⁶⁷⁹⁸¹¹ is an apocalyptic number.

679811 is a deficient number, since it is larger than the sum of its proper divisors (94333).

679811 is a wasteful number, since it uses less digits than its factorization.

679811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721.

The product of its digits is 3024, while the sum is 32.

The square root of 679811 is about 824.5065190767. The cubic root of 679811 is about 87.9284456215.

The spelling of 679811 in words is "six hundred seventy-nine thousand, eight hundred eleven".