680618 has 8 divisors (see below), whose sum is σ = 1074720. Its totient is φ = 322380.

The previous prime is 680611. The next prime is 680623. The reversal of 680618 is 816086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8918 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (134340).

2⁶⁸⁰⁶¹⁸ is an apocalyptic number.

680618 is a deficient number, since it is larger than the sum of its proper divisors (394102).

680618 is a wasteful number, since it uses less digits than its factorization.

680618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 680618 is about 824.9957575648. The cubic root of 680618 is about 87.9632249921.

The spelling of 680618 in words is "six hundred eighty thousand, six hundred eighteen".