9975518 has 24 divisors (see below), whose sum is σ = 17556912. Its totient is φ = 4238304.

The previous prime is 9975461. The next prime is 9975529. The reversal of 9975518 is 8155799.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13055 + ... + 13797.

It is an arithmetic number, because the mean of its divisors is an integer number (731538).

Almost surely, 2^9975518 is an apocalyptic number.

9975518 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9975518 is a deficient number, since it is larger than the sum of its proper divisors (7581394).

9975518 is a wasteful number, since it uses less digits than its factorization.

9975518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 889 counting only the distinct ones).

The product of its digits is 113400, while the sum is 44.

The square root of 9975518 is about 3158.4043439686. The cubic root of 9975518 is about 215.2675090964.

The spelling of 9975518 in words is "nine million, nine hundred seventy-five thousand, five hundred eighteen".