63243613 has 2 divisors, whose sum is σ = 63243614. Its totient is φ = 63243612.

The previous prime is 63243611. The next prime is 63243637. The reversal of 63243613 is 31634236.

63243613 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., 63154809 + 88804 = 7947^2 + 298^2 .

63243613 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 63243613 - 2¹ = 63243611 is a prime.

Together with 63243611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63243611) 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, 31621806 + 31621807.

It is an arithmetic number, because the mean of its divisors is an integer number (31621807).

Almost surely, 2^63243613 is an apocalyptic number.

It is an amenable number.

63243613 is a deficient number, since it is larger than the sum of its proper divisors (1).

63243613 is an equidigital number, since it uses as much as digits as its factorization.

63243613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

The square root of 63243613 is about 7952.5853029062. The cubic root of 63243613 is about 398.4179447524.

Adding to 63243613 its reverse (31634236), we get a palindrome (94877849).

The spelling of 63243613 in words is "sixty-three million, two hundred forty-three thousand, six hundred thirteen".