680558 has 8 divisors (see below), whose sum is σ = 1027080. Its totient is φ = 338200.

The previous prime is 680539. The next prime is 680567. The reversal of 680558 is 855086.

680558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×680558³ = 945620078868903336, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

680558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593 + ... + 1308.

It is an arithmetic number, because the mean of its divisors is an integer number (128385).

2⁶⁸⁰⁵⁵⁸ is an apocalyptic number.

680558 is a deficient number, since it is larger than the sum of its proper divisors (346522).

680558 is a wasteful number, since it uses less digits than its factorization.

680558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 680558 is about 824.9593929400. The cubic root of 680558 is about 87.9606401116.

The spelling of 680558 in words is "six hundred eighty thousand, five hundred fifty-eight".