498998663 has 2 divisors, whose sum is σ = 498998664. Its totient is φ = 498998662.

The previous prime is 498998627. The next prime is 498998683. The reversal of 498998663 is 366899894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 498998663 - 2²⁰ = 497950087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 498998596 and 498998605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498998623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249499331 + 249499332.

It is an arithmetic number, because the mean of its divisors is an integer number (249499332).

Almost surely, 2^498998663 is an apocalyptic number.

498998663 is a deficient number, since it is larger than the sum of its proper divisors (1).

498998663 is an equidigital number, since it uses as much as digits as its factorization.

498998663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 62.

The square root of 498998663 is about 22338.2779774986. The cubic root of 498998663 is about 793.1703307546.

The spelling of 498998663 in words is "four hundred ninety-eight million, nine hundred ninety-eight thousand, six hundred sixty-three".