688030 has 16 divisors (see below), whose sum is σ = 1415520. Its totient is φ = 235872.

The previous prime is 688027. The next prime is 688031. The reversal of 688030 is 30886.

It is a junction number, because it is equal to n+sod(n) for n = 687986 and 688004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4845 + ... + 4984.

It is an arithmetic number, because the mean of its divisors is an integer number (88470).

2⁶⁸⁸⁰³⁰ is an apocalyptic number.

688030 is an abundant number, since it is smaller than the sum of its proper divisors (727490).

It is a weird number, because it is abundant, but not a pseudoperfect number.

688030 is a wasteful number, since it uses less digits than its factorization.

688030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 688030 is about 829.4757380418. The cubic root of 688030 is about 88.2813823712.

The spelling of 688030 in words is "six hundred eighty-eight thousand, thirty".