630561044 has 12 divisors (see below), whose sum is σ = 1108431744. Its totient is φ = 313866264.

The previous prime is 630560947. The next prime is 630561047. The reversal of 630561044 is 440165036.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 630560998 and 630561016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630561047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352562 + ... + 354345.

It is an arithmetic number, because the mean of its divisors is an integer number (92369312).

Almost surely, 2^630561044 is an apocalyptic number.

It is an amenable number.

630561044 is a deficient number, since it is larger than the sum of its proper divisors (477870700).

630561044 is a wasteful number, since it uses less digits than its factorization.

630561044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707134 (or 707132 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 630561044 is about 25110.9745728835. The cubic root of 630561044 is about 857.5162897851.

The spelling of 630561044 in words is "six hundred thirty million, five hundred sixty-one thousand, forty-four".