680828 has 6 divisors (see below), whose sum is σ = 1191456. Its totient is φ = 340412.

The previous prime is 680809. The next prime is 680831. The reversal of 680828 is 828086.

It is a junction number, because it is equal to n+sod(n) for n = 680794 and 680803.

It is a congruent number.

It is an unprimeable number.

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, 85100 + ... + 85107.

It is an arithmetic number, because the mean of its divisors is an integer number (198576).

2⁶⁸⁰⁸²⁸ is an apocalyptic number.

It is an amenable number.

680828 is a deficient number, since it is larger than the sum of its proper divisors (510628).

680828 is a wasteful number, since it uses less digits than its factorization.

680828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170211 (or 170209 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 680828 is about 825.1230211308. The cubic root of 680828 is about 87.9722708777.

The spelling of 680828 in words is "six hundred eighty thousand, eight hundred twenty-eight".