630703872 has 108 divisors (see below), whose sum is σ = 1825496400. Its totient is φ = 209424384.

The previous prime is 630703817. The next prime is 630703873. The reversal of 630703872 is 278307036.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630703873) 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 11 ways as a sum of consecutive naturals, for example, 1052629 + ... + 1053227.

Almost surely, 2^630703872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630703872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912748200).

630703872 is an abundant number, since it is smaller than the sum of its proper divisors (1194792528).

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

630703872 is a wasteful number, since it uses less digits than its factorization.

630703872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 630703872 is about 25113.8183476747. The cubic root of 630703872 is about 857.5810300623.

The spelling of 630703872 in words is "six hundred thirty million, seven hundred three thousand, eight hundred seventy-two".