630903912 has 64 divisors (see below), whose sum is σ = 1632312000. Its totient is φ = 203073024.

The previous prime is 630903901. The next prime is 630903913. The reversal of 630903912 is 219309036.

It is not an unprimeable number, because it can be changed into a prime (630903913) 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, 88414 + ... + 95282.

It is an arithmetic number, because the mean of its divisors is an integer number (25504875).

Almost surely, 2^630903912 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 630903912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816156000).

630903912 is an abundant number, since it is smaller than the sum of its proper divisors (1001408088).

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

630903912 is a wasteful number, since it uses less digits than its factorization.

630903912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010 (or 7006 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 630903912 is about 25117.8006999021. The cubic root of 630903912 is about 857.6716866463.

The spelling of 630903912 in words is "six hundred thirty million, nine hundred three thousand, nine hundred twelve".