680169 has 16 divisors (see below), whose sum is σ = 1059200. Its totient is φ = 388080.

The previous prime is 680161. The next prime is 680177. The reversal of 680169 is 961086.

It is an interprime number because it is at equal distance from previous prime (680161) and next prime (680177).

It is not a de Polignac number, because 680169 - 2³ = 680161 is a prime.

It is a super-2 number, since 2×680169² = 925259737122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (680161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (66200).

2⁶⁸⁰¹⁶⁹ is an apocalyptic number.

It is an amenable number.

680169 is a deficient number, since it is larger than the sum of its proper divisors (379031).

680169 is an equidigital number, since it uses as much as digits as its factorization.

680169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 680169 is about 824.7235900591. The cubic root of 680169 is about 87.9438777830.

The spelling of 680169 in words is "six hundred eighty thousand, one hundred sixty-nine".