680364 has 18 divisors (see below), whose sum is σ = 1719900. Its totient is φ = 226776.

The previous prime is 680353. The next prime is 680377. The reversal of 680364 is 463086.

It is a tau number, because it is divible by the number of its divisors (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680364.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9414 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (95550).

2⁶⁸⁰³⁶⁴ is an apocalyptic number.

It is an amenable number.

680364 is an abundant number, since it is smaller than the sum of its proper divisors (1039536).

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

680364 is a wasteful number, since it uses less digits than its factorization.

680364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909 (or 18904 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 680364 is about 824.8418030144. The cubic root of 680364 is about 87.9522812914.

The spelling of 680364 in words is "six hundred eighty thousand, three hundred sixty-four".