679171 has 2 divisors, whose sum is σ = 679172. Its totient is φ = 679170.

The previous prime is 679169. The next prime is 679183. The reversal of 679171 is 171976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679171 - 2¹ = 679169 is a prime.

It is a super-2 number, since 2×679171² = 922546494482, which contains 22 as substring.

Together with 679169, it forms a pair of twin primes.

679171 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679171.

It is not a weakly prime, because it can be changed into another prime (679111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339585 + 339586.

It is an arithmetic number, because the mean of its divisors is an integer number (339586).

2⁶⁷⁹¹⁷¹ is an apocalyptic number.

679171 is a deficient number, since it is larger than the sum of its proper divisors (1).

679171 is an equidigital number, since it uses as much as digits as its factorization.

679171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 31.

The square root of 679171 is about 824.1183167483. The cubic root of 679171 is about 87.9008438940.

The spelling of 679171 in words is "six hundred seventy-nine thousand, one hundred seventy-one".