680268 has 24 divisors (see below), whose sum is σ = 1608768. Its totient is φ = 223696.

The previous prime is 680263. The next prime is 680291. The reversal of 680268 is 862086.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680268.

It is not an unprimeable number, because it can be changed into a prime (680263) 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, 655 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (67032).

2⁶⁸⁰²⁶⁸ is an apocalyptic number.

It is an amenable number.

680268 is an abundant number, since it is smaller than the sum of its proper divisors (928500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680268 is a wasteful number, since it uses less digits than its factorization.

680268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 680268 is about 824.7836079845. The cubic root of 680268 is about 87.9481443803.

The spelling of 680268 in words is "six hundred eighty thousand, two hundred sixty-eight".