630654444 has 48 divisors (see below), whose sum is σ = 1868608000. Its totient is φ = 180186768.

The previous prime is 630654419. The next prime is 630654449. The reversal of 630654444 is 444456036.

630654444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 630654399 and 630654408.

It is not an unprimeable number, because it can be changed into a prime (630654449) 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, 416344 + ... + 417855.

Almost surely, 2^630654444 is an apocalyptic number.

It is an amenable number.

630654444 is an abundant number, since it is smaller than the sum of its proper divisors (1237953556).

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

630654444 is a wasteful number, since it uses less digits than its factorization.

630654444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834219 (or 834211 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 630654444 is about 25112.8342486466. The cubic root of 630654444 is about 857.5586267209.

The spelling of 630654444 in words is "six hundred thirty million, six hundred fifty-four thousand, four hundred forty-four".