630561460 has 48 divisors (see below), whose sum is σ = 1359521856. Its totient is φ = 245532672.

The previous prime is 630561457. The next prime is 630561461. The reversal of 630561460 is 64165036.

630561460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630561461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297364 + ... + 299476.

It is an arithmetic number, because the mean of its divisors is an integer number (28323372).

Almost surely, 2^630561460 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 630561460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679760928).

630561460 is an abundant number, since it is smaller than the sum of its proper divisors (728960396).

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

630561460 is a wasteful number, since it uses less digits than its factorization.

630561460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 630561460 is about 25110.9828561130. The cubic root of 630561460 is about 857.5164783614.

It can be divided in two parts, 63056 and 1460, that added together give a square (64516 = 254²).

The spelling of 630561460 in words is "six hundred thirty million, five hundred sixty-one thousand, four hundred sixty".