998554727 has 2 divisors, whose sum is σ = 998554728. Its totient is φ = 998554726.

The previous prime is 998554703. The next prime is 998554759. The reversal of 998554727 is 727455899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998554727 is a prime.

It is a super-3 number, since 3×998554727³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998554327) 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, 499277363 + 499277364.

It is an arithmetic number, because the mean of its divisors is an integer number (499277364).

Almost surely, 2^998554727 is an apocalyptic number.

998554727 is a deficient number, since it is larger than the sum of its proper divisors (1).

998554727 is an equidigital number, since it uses as much as digits as its factorization.

998554727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 56.

The square root of 998554727 is about 31599.9165663456. The cubic root of 998554727 is about 999.5180100564.

The spelling of 998554727 in words is "nine hundred ninety-eight million, five hundred fifty-four thousand, seven hundred twenty-seven".