679828 has 6 divisors (see below), whose sum is σ = 1189706. Its totient is φ = 339912.

The previous prime is 679823. The next prime is 679829. The reversal of 679828 is 828976.

679828 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 334084 = 588^2 + 578^2 .

It is a super-2 number, since 2×679828² = 924332219168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679823) 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, 84975 + ... + 84982.

2⁶⁷⁹⁸²⁸ is an apocalyptic number.

It is an amenable number.

679828 is a deficient number, since it is larger than the sum of its proper divisors (509878).

679828 is a wasteful number, since it uses less digits than its factorization.

679828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169961 (or 169959 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 679828 is about 824.5168282091. The cubic root of 679828 is about 87.9291785562.

The spelling of 679828 in words is "six hundred seventy-nine thousand, eight hundred twenty-eight".