63661063 has 4 divisors (see below), whose sum is σ = 63700920. Its totient is φ = 63621208.

The previous prime is 63661057. The next prime is 63661097. The reversal of 63661063 is 36016636.

63661063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63661063 - 2⁹ = 63660551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63661463) 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 in 3 ways as a sum of consecutive naturals, for example, 17428 + ... + 20761.

It is an arithmetic number, because the mean of its divisors is an integer number (15925230).

Almost surely, 2^63661063 is an apocalyptic number.

63661063 is a deficient number, since it is larger than the sum of its proper divisors (39857).

63661063 is a wasteful number, since it uses less digits than its factorization.

63661063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39856.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 63661063 is about 7978.7883165303. The cubic root of 63661063 is about 399.2926310603.

Adding to 63661063 its reverse (36016636), we get a palindrome (99677699).

The spelling of 63661063 in words is "sixty-three million, six hundred sixty-one thousand, sixty-three".