679759 has 4 divisors (see below), whose sum is σ = 685080. Its totient is φ = 674440.

The previous prime is 679753. The next prime is 679781. The reversal of 679759 is 957976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 679759 - 2³ = 679751 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 (679751) 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 3 ways as a sum of consecutive naturals, for example, 2464 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (171270).

2⁶⁷⁹⁷⁵⁹ is an apocalyptic number.

679759 is a deficient number, since it is larger than the sum of its proper divisors (5321).

679759 is a wasteful number, since it uses less digits than its factorization.

679759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320.

The product of its digits is 119070, while the sum is 43.

The square root of 679759 is about 824.4749844598. The cubic root of 679759 is about 87.9262036279.

The spelling of 679759 in words is "six hundred seventy-nine thousand, seven hundred fifty-nine".