998580097 has 2 divisors, whose sum is σ = 998580098. Its totient is φ = 998580096.

The previous prime is 998580083. The next prime is 998580101. The reversal of 998580097 is 790085899.

998580097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902461681 + 96118416 = 30041^2 + 9804^2 .

It is an emirp because it is prime and its reverse (790085899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998580097 is a prime.

It is not a weakly prime, because it can be changed into another prime (998580997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499290048 + 499290049.

It is an arithmetic number, because the mean of its divisors is an integer number (499290049).

Almost surely, 2^998580097 is an apocalyptic number.

It is an amenable number.

998580097 is a deficient number, since it is larger than the sum of its proper divisors (1).

998580097 is an equidigital number, since it uses as much as digits as its factorization.

998580097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 998580097 is about 31600.3179889064. The cubic root of 998580097 is about 999.5264748093.

The spelling of 998580097 in words is "nine hundred ninety-eight million, five hundred eighty thousand, ninety-seven".