99808663 has 2 divisors, whose sum is σ = 99808664. Its totient is φ = 99808662.

The previous prime is 99808619. The next prime is 99808703. The reversal of 99808663 is 36680899.

It is a strong prime.

It is an emirp because it is prime and its reverse (36680899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99808663 - 2²¹ = 97711511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99808603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49904331 + 49904332.

It is an arithmetic number, because the mean of its divisors is an integer number (49904332).

Almost surely, 2^99808663 is an apocalyptic number.

99808663 is a deficient number, since it is larger than the sum of its proper divisors (1).

99808663 is an equidigital number, since it uses as much as digits as its factorization.

99808663 is an evil number, because the sum of its binary digits is even.

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

The square root of 99808663 is about 9990.4285693858. The cubic root of 99808663 is about 463.8626584574.

The spelling of 99808663 in words is "ninety-nine million, eight hundred eight thousand, six hundred sixty-three".