630648448 has 16 divisors (see below), whose sum is σ = 1256370210. Its totient is φ = 315324160.

The previous prime is 630648419. The next prime is 630648451. The reversal of 630648448 is 844846036.

It can be written as a sum of positive squares in only one way, i.e., 619412544 + 11235904 = 24888^2 + 3352^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2463343 + ... + 2463598.

Almost surely, 2^630648448 is an apocalyptic number.

It is an amenable number.

630648448 is a deficient number, since it is larger than the sum of its proper divisors (625721762).

630648448 is an equidigital number, since it uses as much as digits as its factorization.

630648448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926955 (or 4926943 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The square root of 630648448 is about 25112.7148671744. The cubic root of 630648448 is about 857.5559089421. Note that the first 3 decimals are identical.

The spelling of 630648448 in words is "six hundred thirty million, six hundred forty-eight thousand, four hundred forty-eight".