998996533 has 2 divisors, whose sum is σ = 998996534. Its totient is φ = 998996532.

The previous prime is 998996527. The next prime is 998996561. The reversal of 998996533 is 335699899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811224324 + 187772209 = 28482^2 + 13703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998996533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998996563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499498266 + 499498267.

It is an arithmetic number, because the mean of its divisors is an integer number (499498267).

Almost surely, 2^998996533 is an apocalyptic number.

It is an amenable number.

998996533 is a deficient number, since it is larger than the sum of its proper divisors (1).

998996533 is an equidigital number, since it uses as much as digits as its factorization.

998996533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14171760, while the sum is 61.

The square root of 998996533 is about 31606.9064129978. The cubic root of 998996533 is about 999.6653990547.

The spelling of 998996533 in words is "nine hundred ninety-eight million, nine hundred ninety-six thousand, five hundred thirty-three".