998102663 has 2 divisors, whose sum is σ = 998102664. Its totient is φ = 998102662.

The previous prime is 998102659. The next prime is 998102701. The reversal of 998102663 is 366201899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998102663 - 2² = 998102659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998102603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499051331 + 499051332.

It is an arithmetic number, because the mean of its divisors is an integer number (499051332).

Almost surely, 2^998102663 is an apocalyptic number.

998102663 is a deficient number, since it is larger than the sum of its proper divisors (1).

998102663 is an equidigital number, since it uses as much as digits as its factorization.

998102663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 998102663 is about 31592.7628263183. The cubic root of 998102663 is about 999.3671539237.

The spelling of 998102663 in words is "nine hundred ninety-eight million, one hundred two thousand, six hundred sixty-three".