679791 has 8 divisors (see below), whose sum is σ = 1035904. Its totient is φ = 388440.

The previous prime is 679781. The next prime is 679793. The reversal of 679791 is 197976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 679791 - 2⁹ = 679279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16165 + ... + 16206.

It is an arithmetic number, because the mean of its divisors is an integer number (129488).

2⁶⁷⁹⁷⁹¹ is an apocalyptic number.

679791 is a deficient number, since it is larger than the sum of its proper divisors (356113).

679791 is a wasteful number, since it uses less digits than its factorization.

679791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32381.

The product of its digits is 23814, while the sum is 39.

The square root of 679791 is about 824.4943905206. The cubic root of 679791 is about 87.9275833298.

It can be divided in two parts, 6 and 79791, that added together give a palindrome (79797).

The spelling of 679791 in words is "six hundred seventy-nine thousand, seven hundred ninety-one".