679539 has 8 divisors (see below), whose sum is σ = 1035520. Its totient is φ = 388296.

The previous prime is 679537. The next prime is 679561. The reversal of 679539 is 935976.

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

It is not a de Polignac number, because 679539 - 2¹ = 679537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679497 and 679506.

It is not an unprimeable number, because it can be changed into a prime (679531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16159 + ... + 16200.

It is an arithmetic number, because the mean of its divisors is an integer number (129440).

2⁶⁷⁹⁵³⁹ is an apocalyptic number.

679539 is a deficient number, since it is larger than the sum of its proper divisors (355981).

679539 is a wasteful number, since it uses less digits than its factorization.

679539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32369.

The product of its digits is 51030, while the sum is 39.

The square root of 679539 is about 824.3415554247. The cubic root of 679539 is about 87.9167170049.

The spelling of 679539 in words is "six hundred seventy-nine thousand, five hundred thirty-nine".