679911 has 4 divisors (see below), whose sum is σ = 906552. Its totient is φ = 453272.

The previous prime is 679909. The next prime is 679919. The reversal of 679911 is 119976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 679911 - 2¹ = 679909 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113316 + ... + 113321.

It is an arithmetic number, because the mean of its divisors is an integer number (226638).

2⁶⁷⁹⁹¹¹ is an apocalyptic number.

679911 is a deficient number, since it is larger than the sum of its proper divisors (226641).

679911 is a wasteful number, since it uses less digits than its factorization.

679911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226640.

The product of its digits is 3402, while the sum is 33.

The square root of 679911 is about 824.5671591811. The cubic root of 679911 is about 87.9327568264.

The spelling of 679911 in words is "six hundred seventy-nine thousand, nine hundred eleven".