630938980 has 24 divisors (see below), whose sum is σ = 1514253888. Its totient is φ = 216321888.

The previous prime is 630938929. The next prime is 630938981. The reversal of 630938980 is 89839036.

It is a self number, because there is not a number n which added to its sum of digits gives 630938980.

It is not an unprimeable number, because it can be changed into a prime (630938981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253214 + ... + 2253493.

It is an arithmetic number, because the mean of its divisors is an integer number (63093912).

Almost surely, 2^630938980 is an apocalyptic number.

It is an amenable number.

630938980 is an abundant number, since it is smaller than the sum of its proper divisors (883314908).

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

630938980 is a wasteful number, since it uses less digits than its factorization.

630938980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506723 (or 4506721 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 630938980 is about 25118.4987608734. The cubic root of 630938980 is about 857.6875772190.

The spelling of 630938980 in words is "six hundred thirty million, nine hundred thirty-eight thousand, nine hundred eighty".