679886 has 4 divisors (see below), whose sum is σ = 1019832. Its totient is φ = 339942.

The previous prime is 679883. The next prime is 679891. The reversal of 679886 is 688976.

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

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679886.

It is not an unprimeable number, because it can be changed into a prime (679883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169970 + ... + 169973.

It is an arithmetic number, because the mean of its divisors is an integer number (254958).

2⁶⁷⁹⁸⁸⁶ is an apocalyptic number.

679886 is a deficient number, since it is larger than the sum of its proper divisors (339946).

679886 is a wasteful number, since it uses less digits than its factorization.

679886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339945.

The product of its digits is 145152, while the sum is 44.

The square root of 679886 is about 824.5519995731. The cubic root of 679886 is about 87.9316790648.

The spelling of 679886 in words is "six hundred seventy-nine thousand, eight hundred eighty-six".