680228 has 6 divisors (see below), whose sum is σ = 1190406. Its totient is φ = 340112.

The previous prime is 680213. The next prime is 680237. The reversal of 680228 is 822086.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 322624 = 598^2 + 568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 680197 and 680206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85025 + ... + 85032.

It is an arithmetic number, because the mean of its divisors is an integer number (198401).

2⁶⁸⁰²²⁸ is an apocalyptic number.

It is an amenable number.

680228 is a deficient number, since it is larger than the sum of its proper divisors (510178).

680228 is a wasteful number, since it uses less digits than its factorization.

680228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170061 (or 170059 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 680228 is about 824.7593588435. The cubic root of 680228 is about 87.9464205524.

The spelling of 680228 in words is "six hundred eighty thousand, two hundred twenty-eight".