9990630 has 48 divisors (see below), whose sum is σ = 27977040. Its totient is φ = 2458944.

The previous prime is 9990569. The next prime is 9990653. The reversal of 9990630 is 360999.

9990630 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 23 ways as a sum of consecutive naturals, for example, 3100 + ... + 5439.

It is an arithmetic number, because the mean of its divisors is an integer number (582855).

Almost surely, 2^9990630 is an apocalyptic number.

9990630 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9990630 is an abundant number, since it is smaller than the sum of its proper divisors (17986410).

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

9990630 is a wasteful number, since it uses less digits than its factorization.

9990630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8565 (or 8562 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 9990630 is about 3160.7957858742. The cubic root of 9990630 is about 215.3761577985.

The spelling of 9990630 in words is "nine million, nine hundred ninety thousand, six hundred thirty".