630606680 has 64 divisors (see below), whose sum is σ = 1571028480. Its totient is φ = 225878400.

The previous prime is 630606673. The next prime is 630606703. The reversal of 630606680 is 86606036.

It is a self number, because there is not a number n which added to its sum of digits gives 630606680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18785 + ... + 40175.

It is an arithmetic number, because the mean of its divisors is an integer number (24547320).

Almost surely, 2^630606680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630606680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785514240).

630606680 is an abundant number, since it is smaller than the sum of its proper divisors (940421800).

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

630606680 is a wasteful number, since it uses less digits than its factorization.

630606680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21480 (or 21476 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 630606680 is about 25111.8832427996. The cubic root of 630606680 is about 857.5369764787.

The spelling of 630606680 in words is "six hundred thirty million, six hundred six thousand, six hundred eighty".