630421144 has 32 divisors (see below), whose sum is σ = 1190700000. Its totient is φ = 312911872.

The previous prime is 630421109. The next prime is 630421163. The reversal of 630421144 is 441124036.

630421144 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052157 + ... + 1052755.

It is an arithmetic number, because the mean of its divisors is an integer number (37209375).

Almost surely, 2^630421144 is an apocalyptic number.

It is an amenable number.

630421144 is a deficient number, since it is larger than the sum of its proper divisors (560278856).

630421144 is a wasteful number, since it uses less digits than its factorization.

630421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 630421144 is about 25108.1887837415. The cubic root of 630421144 is about 857.4528672170.

The spelling of 630421144 in words is "six hundred thirty million, four hundred twenty-one thousand, one hundred forty-four".