680630 has 16 divisors (see below), whose sum is σ = 1267920. Its totient is φ = 262752.

The previous prime is 680623. The next prime is 680633. The reversal of 680630 is 36086.

680630 = 411² + 412² + ... + 414².

680630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 680596 and 680605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680633) 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, 884 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (79245).

2⁶⁸⁰⁶³⁰ is an apocalyptic number.

680630 is a deficient number, since it is larger than the sum of its proper divisors (587290).

680630 is a wasteful number, since it uses less digits than its factorization.

680630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 680630 is about 825.0030302975. The cubic root of 680630 is about 87.9637419499.

The spelling of 680630 in words is "six hundred eighty thousand, six hundred thirty".