679495 has 4 divisors (see below), whose sum is σ = 815400. Its totient is φ = 543592.

The previous prime is 679487. The next prime is 679501. The reversal of 679495 is 594976.

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 679495 - 2³ = 679487 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 67945 + ... + 67954.

It is an arithmetic number, because the mean of its divisors is an integer number (203850).

2⁶⁷⁹⁴⁹⁵ is an apocalyptic number.

679495 is a deficient number, since it is larger than the sum of its proper divisors (135905).

679495 is a wasteful number, since it uses less digits than its factorization.

679495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135904.

The product of its digits is 68040, while the sum is 40.

The square root of 679495 is about 824.3148670259. The cubic root of 679495 is about 87.9148194346.

It can be divided in two parts, 6794 and 95, that added together give a square (6889 = 83²).

The spelling of 679495 in words is "six hundred seventy-nine thousand, four hundred ninety-five".