9890663 has 2 divisors, whose sum is σ = 9890664. Its totient is φ = 9890662.

The previous prime is 9890623. The next prime is 9890669. The reversal of 9890663 is 3660989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9890663 - 2⁶ = 9890599 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 9890663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9890669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4945331 + 4945332.

It is an arithmetic number, because the mean of its divisors is an integer number (4945332).

Almost surely, 2^9890663 is an apocalyptic number.

9890663 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890663 is an equidigital number, since it uses as much as digits as its factorization.

9890663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 9890663 is about 3144.9424478041. The cubic root of 9890663 is about 214.6553917002.

The spelling of 9890663 in words is "nine million, eight hundred ninety thousand, six hundred sixty-three".