679523 has 8 divisors (see below), whose sum is σ = 738528. Its totient is φ = 621504.

The previous prime is 679519. The next prime is 679531. The reversal of 679523 is 325976.

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

It is not a de Polignac number, because 679523 - 2² = 679519 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679523.

It is not an unprimeable number, because it can be changed into a prime (679123) 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, 2015 + ... + 2327.

It is an arithmetic number, because the mean of its divisors is an integer number (92316).

2⁶⁷⁹⁵²³ is an apocalyptic number.

679523 is a deficient number, since it is larger than the sum of its proper divisors (59005).

679523 is a wasteful number, since it uses less digits than its factorization.

679523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 11340, while the sum is 32.

The square root of 679523 is about 824.3318506524. The cubic root of 679523 is about 87.9160269888.

The spelling of 679523 in words is "six hundred seventy-nine thousand, five hundred twenty-three".