63636697 has 2 divisors, whose sum is σ = 63636698. Its totient is φ = 63636696.

The previous prime is 63636679. The next prime is 63636709. The reversal of 63636697 is 79663636.

63636697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (63636679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63536841 + 99856 = 7971^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 63636697 - 2⁷ = 63636569 is a prime.

It is not a weakly prime, because it can be changed into another prime (63636647) 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, 31818348 + 31818349.

It is an arithmetic number, because the mean of its divisors is an integer number (31818349).

Almost surely, 2^63636697 is an apocalyptic number.

It is an amenable number.

63636697 is a deficient number, since it is larger than the sum of its proper divisors (1).

63636697 is an equidigital number, since it uses as much as digits as its factorization.

63636697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 46.

The square root of 63636697 is about 7977.2612468190. The cubic root of 63636697 is about 399.2416820432.

The spelling of 63636697 in words is "sixty-three million, six hundred thirty-six thousand, six hundred ninety-seven".