680530 has 8 divisors (see below), whose sum is σ = 1224972. Its totient is φ = 272208.

The previous prime is 680509. The next prime is 680531. The reversal of 680530 is 35086.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 35721 = 803^2 + 189^2 .

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

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (680531) 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, 34017 + ... + 34036.

2⁶⁸⁰⁵³⁰ is an apocalyptic number.

680530 is a deficient number, since it is larger than the sum of its proper divisors (544442).

680530 is a wasteful number, since it uses less digits than its factorization.

680530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68060.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 680530 is about 824.9424222332. The cubic root of 680530 is about 87.9594337820.

The spelling of 680530 in words is "six hundred eighty thousand, five hundred thirty".