680630140 has 24 divisors (see below), whose sum is σ = 1449457632. Its totient is φ = 268416960.

The previous prime is 680630123. The next prime is 680630143. The reversal of 680630140 is 41036086.

680630140 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 = 680630099 and 680630108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680630143) 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, 238239 + ... + 241078.

It is an arithmetic number, because the mean of its divisors is an integer number (60394068).

Almost surely, 2^680630140 is an apocalyptic number.

It is an amenable number.

680630140 is an abundant number, since it is smaller than the sum of its proper divisors (768827492).

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

680630140 is a wasteful number, since it uses less digits than its factorization.

680630140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479397 (or 479395 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 680630140 is about 26088.8892059436. The cubic root of 680630140 is about 879.6374798108.

The spelling of 680630140 in words is "six hundred eighty million, six hundred thirty thousand, one hundred forty".