9916660690 has 32 divisors (see below), whose sum is σ = 18809521920. Its totient is φ = 3753880704.

The previous prime is 9916660679. The next prime is 9916660717. The reversal of 9916660690 is 960666199.

9916660690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9916660690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153687 + ... + 208453.

It is an arithmetic number, because the mean of its divisors is an integer number (587797560).

Almost surely, 2^9916660690 is an apocalyptic number.

9916660690 is a deficient number, since it is larger than the sum of its proper divisors (8892861230).

9916660690 is a wasteful number, since it uses less digits than its factorization.

9916660690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55746.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 9916660690 is about 99582.4316332956. The cubic root of 9916660690 is about 2148.4330164974.

The spelling of 9916660690 in words is "nine billion, nine hundred sixteen million, six hundred sixty thousand, six hundred ninety".