998554703 has 2 divisors, whose sum is σ = 998554704. Its totient is φ = 998554702.

The previous prime is 998554699. The next prime is 998554727. The reversal of 998554703 is 307455899.

It is a weak prime.

It is an emirp because it is prime and its reverse (307455899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998554703 - 2² = 998554699 is a prime.

It is a super-2 number, since 2×998554703² = 1994222989766836418, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_50777978 and since 998554703 and 50777978 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998554793) 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, 499277351 + 499277352.

It is an arithmetic number, because the mean of its divisors is an integer number (499277352).

Almost surely, 2^998554703 is an apocalyptic number.

998554703 is a deficient number, since it is larger than the sum of its proper divisors (1).

998554703 is an equidigital number, since it uses as much as digits as its factorization.

998554703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 998554703 is about 31599.9161865977. The cubic root of 998554703 is about 999.5180020486.

The spelling of 998554703 in words is "nine hundred ninety-eight million, five hundred fifty-four thousand, seven hundred three".