9906998 has 16 divisors (see below), whose sum is σ = 15146880. Its totient is φ = 4859136.

The previous prime is 9906991. The next prime is 9907003. The reversal of 9906998 is 8996099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 43148 + ... + 43376.

It is an arithmetic number, because the mean of its divisors is an integer number (946680).

Almost surely, 2^9906998 is an apocalyptic number.

9906998 is a deficient number, since it is larger than the sum of its proper divisors (5239882).

9906998 is a wasteful number, since it uses less digits than its factorization.

9906998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 9906998 is about 3147.5384032606. The cubic root of 9906998 is about 214.7734986210.

The spelling of 9906998 in words is "nine million, nine hundred six thousand, nine hundred ninety-eight".