9985603 has 4 divisors (see below), whose sum is σ = 9994600. Its totient is φ = 9976608.

The previous prime is 9985601. The next prime is 9985607. The reversal of 9985603 is 3065899.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3065899 = 17 ⋅180347.

It is a cyclic number.

It is not a de Polignac number, because 9985603 - 2¹ = 9985601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9985601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (2498650).

Almost surely, 2^9985603 is an apocalyptic number.

9985603 is a deficient number, since it is larger than the sum of its proper divisors (8997).

9985603 is a wasteful number, since it uses less digits than its factorization.

9985603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 9985603 is about 3160.0004746835. Note that the first 3 decimals coincide. The cubic root of 9985603 is about 215.3400280252.

The spelling of 9985603 in words is "nine million, nine hundred eighty-five thousand, six hundred three".