679165 has 8 divisors (see below), whose sum is σ = 835128. Its totient is φ = 529920.

The previous prime is 679157. The next prime is 679169. The reversal of 679165 is 561976.

It can be written as a sum of positive squares in 4 ways, for example, as 56644 + 622521 = 238^2 + 789^2 .

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

It is not a de Polignac number, because 679165 - 2³ = 679157 is a prime.

It is a super-2 number, since 2×679165² = 922530194450, which contains 22 as substring.

It is a Duffinian number.

679165 is a lucky number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 679165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679169) 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 7 ways as a sum of consecutive naturals, for example, 1452 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (104391).

2⁶⁷⁹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

679165 is a deficient number, since it is larger than the sum of its proper divisors (155963).

679165 is a wasteful number, since it uses less digits than its factorization.

679165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its digits is 11340, while the sum is 34.

The square root of 679165 is about 824.1146764862. The cubic root of 679165 is about 87.9005850457.

The spelling of 679165 in words is "six hundred seventy-nine thousand, one hundred sixty-five".