998503633 has 2 divisors, whose sum is σ = 998503634. Its totient is φ = 998503632.

The previous prime is 998503631. The next prime is 998503651. The reversal of 998503633 is 336305899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834458769 + 164044864 = 28887^2 + 12808^2 .

It is a cyclic number.

It is not a de Polignac number, because 998503633 - 2¹ = 998503631 is a prime.

It is a super-2 number, since 2×998503633² = 1994019010228397378, which contains 22 as substring.

Together with 998503631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (998503631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499251816 + 499251817.

It is an arithmetic number, because the mean of its divisors is an integer number (499251817).

Almost surely, 2^998503633 is an apocalyptic number.

It is an amenable number.

998503633 is a deficient number, since it is larger than the sum of its proper divisors (1).

998503633 is an equidigital number, since it uses as much as digits as its factorization.

998503633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 46.

The square root of 998503633 is about 31599.1081045019. The cubic root of 998503633 is about 999.5009620025.

The spelling of 998503633 in words is "nine hundred ninety-eight million, five hundred three thousand, six hundred thirty-three".