998585741 has 2 divisors, whose sum is σ = 998585742. Its totient is φ = 998585740.

The previous prime is 998585723. The next prime is 998585743. The reversal of 998585741 is 147585899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521163241 + 477422500 = 22829^2 + 21850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998585741 is a prime.

Together with 998585743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998585743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499292870 + 499292871.

It is an arithmetic number, because the mean of its divisors is an integer number (499292871).

Almost surely, 2^998585741 is an apocalyptic number.

It is an amenable number.

998585741 is a deficient number, since it is larger than the sum of its proper divisors (1).

998585741 is an equidigital number, since it uses as much as digits as its factorization.

998585741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 56.

The square root of 998585741 is about 31600.4072916790. The cubic root of 998585741 is about 999.5283579221.

The spelling of 998585741 in words is "nine hundred ninety-eight million, five hundred eighty-five thousand, seven hundred forty-one".