679507 has 4 divisors (see below), whose sum is σ = 719496. Its totient is φ = 639520.

The previous prime is 679501. The next prime is 679517. The reversal of 679507 is 705976.

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 679507 - 2¹¹ = 677459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679501) 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 3 ways as a sum of consecutive naturals, for example, 19969 + ... + 20002.

It is an arithmetic number, because the mean of its divisors is an integer number (179874).

2⁶⁷⁹⁵⁰⁷ is an apocalyptic number.

679507 is a deficient number, since it is larger than the sum of its proper divisors (39989).

679507 is a wasteful number, since it uses less digits than its factorization.

679507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39988.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 679507 is about 824.3221457658. The cubic root of 679507 is about 87.9153369619.

The spelling of 679507 in words is "six hundred seventy-nine thousand, five hundred seven".