680966 has 16 divisors (see below), whose sum is σ = 1200528. Its totient is φ = 285600.

The previous prime is 680959. The next prime is 680971. The reversal of 680966 is 669086.

680966 is nontrivially palindromic in base 5.

It is a congruent number.

It is an unprimeable number.

680966 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 7 ways as a sum of consecutive naturals, for example, 905 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (75033).

2⁶⁸⁰⁹⁶⁶ is an apocalyptic number.

680966 is a deficient number, since it is larger than the sum of its proper divisors (519562).

680966 is a wasteful number, since it uses less digits than its factorization.

680966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 680966 is about 825.2066407876. The cubic root of 680966 is about 87.9782143040.

The spelling of 680966 in words is "six hundred eighty thousand, nine hundred sixty-six".