679973 has 6 divisors (see below), whose sum is σ = 791046. Its totient is φ = 582792.

The previous prime is 679969. The next prime is 679981. The reversal of 679973 is 379976.

It can be written as a sum of positive squares in only one way, i.e., 432964 + 247009 = 658^2 + 497^2 .

It is not a de Polignac number, because 679973 - 2² = 679969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 679973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6890 + ... + 6987.

It is an arithmetic number, because the mean of its divisors is an integer number (131841).

2⁶⁷⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

679973 is a deficient number, since it is larger than the sum of its proper divisors (111073).

679973 is a wasteful number, since it uses less digits than its factorization.

679973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13891 (or 13884 counting only the distinct ones).

The product of its digits is 71442, while the sum is 41.

The square root of 679973 is about 824.6047538063. The cubic root of 679973 is about 87.9354295611.

The spelling of 679973 in words is "six hundred seventy-nine thousand, nine hundred seventy-three".