9976663 has 4 divisors (see below), whose sum is σ = 9984240. Its totient is φ = 9969088.

The previous prime is 9976651. The next prime is 9976669. The reversal of 9976663 is 3666799.

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: 3666799 = 47 ⋅78017.

It is a cyclic number.

It is not a de Polignac number, because 9976663 - 2⁹ = 9976151 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976669) 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 3 ways as a sum of consecutive naturals, for example, 1243 + ... + 4636.

It is an arithmetic number, because the mean of its divisors is an integer number (2496060).

Almost surely, 2^9976663 is an apocalyptic number.

9976663 is a deficient number, since it is larger than the sum of its proper divisors (7577).

9976663 is a wasteful number, since it uses less digits than its factorization.

9976663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576.

The product of its digits is 367416, while the sum is 46.

The square root of 9976663 is about 3158.5856011829. The cubic root of 9976663 is about 215.2757449884.

The spelling of 9976663 in words is "nine million, nine hundred seventy-six thousand, six hundred sixty-three".