679111 has 2 divisors, whose sum is σ = 679112. Its totient is φ = 679110.

The previous prime is 679087. The next prime is 679123. The reversal of 679111 is 111976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679111 - 2⁹ = 678599 is a prime.

It is a super-2 number, since 2×679111² = 922383500642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679171) 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 as a sum of consecutive naturals, namely, 339555 + 339556.

It is an arithmetic number, because the mean of its divisors is an integer number (339556).

2⁶⁷⁹¹¹¹ is an apocalyptic number.

679111 is a deficient number, since it is larger than the sum of its proper divisors (1).

679111 is an equidigital number, since it uses as much as digits as its factorization.

679111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 25.

The square root of 679111 is about 824.0819134042. The cubic root of 679111 is about 87.8982553431.

The spelling of 679111 in words is "six hundred seventy-nine thousand, one hundred eleven".