99998603 has 2 divisors, whose sum is σ = 99998604. Its totient is φ = 99998602.

The previous prime is 99998557. The next prime is 99998609. The reversal of 99998603 is 30689999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99998603 - 2¹⁸ = 99736459 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99998609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999301 + 49999302.

It is an arithmetic number, because the mean of its divisors is an integer number (49999302).

Almost surely, 2^99998603 is an apocalyptic number.

99998603 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998603 is an equidigital number, since it uses as much as digits as its factorization.

99998603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 99998603 is about 9999.9301497560. The cubic root of 99998603 is about 464.1567219180.

The spelling of 99998603 in words is "ninety-nine million, nine hundred ninety-eight thousand, six hundred three".