9990603 has 12 divisors (see below), whose sum is σ = 16492528. Its totient is φ = 5708880.

The previous prime is 9990569. The next prime is 9990653. The reversal of 9990603 is 3060999.

9990603 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9990603 - 2¹⁰ = 9989579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9990653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79228 + ... + 79353.

Almost surely, 2^9990603 is an apocalyptic number.

9990603 is a deficient number, since it is larger than the sum of its proper divisors (6501925).

9990603 is a wasteful number, since it uses less digits than its factorization.

9990603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158594 (or 158591 counting only the distinct ones).

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

The square root of 9990603 is about 3160.7915147950. The cubic root of 9990603 is about 215.3759637779.

The spelling of 9990603 in words is "nine million, nine hundred ninety thousand, six hundred three".