65198369 has 2 divisors, whose sum is σ = 65198370. Its totient is φ = 65198368.

The previous prime is 65198359. The next prime is 65198387. The reversal of 65198369 is 96389156.

65198369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 877969 = 8020^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 65198369 - 2⁸ = 65198113 is a prime.

It is a super-2 number, since 2×65198369² = 8501654640520322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65198339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32599184 + 32599185.

It is an arithmetic number, because the mean of its divisors is an integer number (32599185).

Almost surely, 2^65198369 is an apocalyptic number.

It is an amenable number.

65198369 is a deficient number, since it is larger than the sum of its proper divisors (1).

65198369 is an equidigital number, since it uses as much as digits as its factorization.

65198369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 65198369 is about 8074.5506995746. The cubic root of 65198369 is about 402.4811796300.

The spelling of 65198369 in words is "sixty-five million, one hundred ninety-eight thousand, three hundred sixty-nine".