998936717 has 2 divisors, whose sum is σ = 998936718. Its totient is φ = 998936716.

The previous prime is 998936707. The next prime is 998936797. The reversal of 998936717 is 717639899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996917476 + 2019241 = 31574^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 998936717 - 2¹⁴ = 998920333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998936707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499468358 + 499468359.

It is an arithmetic number, because the mean of its divisors is an integer number (499468359).

Almost surely, 2^998936717 is an apocalyptic number.

It is an amenable number.

998936717 is a deficient number, since it is larger than the sum of its proper divisors (1).

998936717 is an equidigital number, since it uses as much as digits as its factorization.

998936717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 59.

The square root of 998936717 is about 31605.9601499464. The cubic root of 998936717 is about 999.6454466401.

The spelling of 998936717 in words is "nine hundred ninety-eight million, nine hundred thirty-six thousand, seven hundred seventeen".