680958 has 12 divisors (see below), whose sum is σ = 1475448. Its totient is φ = 226980.

The previous prime is 680929. The next prime is 680959. The reversal of 680958 is 859086.

It is a super-3 number, since 3×680958³ = 947288432153333736, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680959) by changing a digit.

680958 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18898 + ... + 18933.

It is an arithmetic number, because the mean of its divisors is an integer number (122954).

2⁶⁸⁰⁹⁵⁸ is an apocalyptic number.

680958 is an abundant number, since it is smaller than the sum of its proper divisors (794490).

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

680958 is a wasteful number, since it uses less digits than its factorization.

680958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37839 (or 37836 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 680958 is about 825.2017935027. The cubic root of 680958 is about 87.9778697795.

The spelling of 680958 in words is "six hundred eighty thousand, nine hundred fifty-eight".