630530720 has 48 divisors (see below), whose sum is σ = 1492085448. Its totient is φ = 251796480.

The previous prime is 630530651. The next prime is 630530723. The reversal of 630530720 is 27035036.

It can be written as a sum of positive squares in 4 ways, for example, as 624400144 + 6130576 = 24988^2 + 2476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 630530720.

It is not an unprimeable number, because it can be changed into a prime (630530723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105410 + ... + 111230.

Almost surely, 2^630530720 is an apocalyptic number.

It is an amenable number.

630530720 is an abundant number, since it is smaller than the sum of its proper divisors (861554728).

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

630530720 is a wasteful number, since it uses less digits than its factorization.

630530720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6513 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 630530720 is about 25110.3707658808. The cubic root of 630530720 is about 857.5025434338.

Adding to 630530720 its reverse (27035036), we get a palindrome (657565756).

The spelling of 630530720 in words is "six hundred thirty million, five hundred thirty thousand, seven hundred twenty".