63198689 has 2 divisors, whose sum is σ = 63198690. Its totient is φ = 63198688.

The previous prime is 63198683. The next prime is 63198697. The reversal of 63198689 is 98689136.

63198689 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., 47334400 + 15864289 = 6880^2 + 3983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63198689 is a prime.

It is not a weakly prime, because it can be changed into another prime (63198683) 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, 31599344 + 31599345.

It is an arithmetic number, because the mean of its divisors is an integer number (31599345).

Almost surely, 2^63198689 is an apocalyptic number.

It is an amenable number.

63198689 is a deficient number, since it is larger than the sum of its proper divisors (1).

63198689 is an equidigital number, since it uses as much as digits as its factorization.

63198689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 63198689 is about 7949.7603108521. The cubic root of 63198689 is about 398.3235859888.

The spelling of 63198689 in words is "sixty-three million, one hundred ninety-eight thousand, six hundred eighty-nine".