9990664176 has 80 divisors (see below), whose sum is σ = 27994020768. Its totient is φ = 3057868800.

The previous prime is 9990664157. The next prime is 9990664183. The reversal of 9990664176 is 6714660999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115855 + ... + 182766.

Almost surely, 2^9990664176 is an apocalyptic number.

It is an amenable number.

9990664176 is an abundant number, since it is smaller than the sum of its proper divisors (18003356592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9990664176 is a wasteful number, since it uses less digits than its factorization.

9990664176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298690 (or 298684 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 57.

The square root of 9990664176 is about 99953.3099802103. The cubic root of 9990664176 is about 2153.7640338481.

The spelling of 9990664176 in words is "nine billion, nine hundred ninety million, six hundred sixty-four thousand, one hundred seventy-six".