679169 has 2 divisors, whose sum is σ = 679170. Its totient is φ = 679168.

The previous prime is 679157. The next prime is 679171. The reversal of 679169 is 961976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506944 + 172225 = 712^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 679169 - 2⁴ = 679153 is a prime.

It is a super-2 number, since 2×679169² = 922541061122, which contains 22 as substring.

Together with 679171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339584 + 339585.

It is an arithmetic number, because the mean of its divisors is an integer number (339585).

2⁶⁷⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

679169 is a deficient number, since it is larger than the sum of its proper divisors (1).

679169 is an equidigital number, since it uses as much as digits as its factorization.

679169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 679169 is about 824.1171033294. The cubic root of 679169 is about 87.9007576114.

It can be divided in two parts, 679 and 169, that added together give a palindrome (848).

The spelling of 679169 in words is "six hundred seventy-nine thousand, one hundred sixty-nine".