8998663 has 2 divisors, whose sum is σ = 8998664. Its totient is φ = 8998662.

The previous prime is 8998657. The next prime is 8998673. The reversal of 8998663 is 3668998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8998663 - 2²¹ = 6901511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8998603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499331 + 4499332.

It is an arithmetic number, because the mean of its divisors is an integer number (4499332).

Almost surely, 2^8998663 is an apocalyptic number.

8998663 is a deficient number, since it is larger than the sum of its proper divisors (1).

8998663 is an equidigital number, since it uses as much as digits as its factorization.

8998663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 8998663 is about 2999.7771583903. Note that the first 3 decimals coincide. The cubic root of 8998663 is about 207.9980815282.

The spelling of 8998663 in words is "eight million, nine hundred ninety-eight thousand, six hundred sixty-three".