679091 has 6 divisors (see below), whose sum is σ = 790020. Its totient is φ = 582036.

The previous prime is 679087. The next prime is 679111. The reversal of 679091 is 190976.

679091 is nontrivially palindromic in base 5.

It is not a de Polignac number, because 679091 - 2² = 679087 is a prime.

It is a super-2 number, since 2×679091² = 922329172562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679051) 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 in 5 ways as a sum of consecutive naturals, for example, 6881 + ... + 6978.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2⁶⁷⁹⁰⁹¹ is an apocalyptic number.

679091 is a deficient number, since it is larger than the sum of its proper divisors (110929).

679091 is a wasteful number, since it uses less digits than its factorization.

679091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13873 (or 13866 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 679091 is about 824.0697785989. The cubic root of 679091 is about 87.8973924590.

It can be divided in two parts, 6 and 79091, that added together give a palindrome (79097).

The spelling of 679091 in words is "six hundred seventy-nine thousand, ninety-one".