63644063 has 8 divisors (see below), whose sum is σ = 74284032. Its totient is φ = 53391096.

The previous prime is 63644057. The next prime is 63644071. The reversal of 63644063 is 36044636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63644063 - 2⁴ = 63644047 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 (63644083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96395 + ... + 97052.

It is an arithmetic number, because the mean of its divisors is an integer number (9285504).

Almost surely, 2^63644063 is an apocalyptic number.

63644063 is a deficient number, since it is larger than the sum of its proper divisors (10639969).

63644063 is a wasteful number, since it uses less digits than its factorization.

63644063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193501.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 63644063 is about 7977.7229207337. The cubic root of 63644063 is about 399.2570856332.

Adding to 63644063 its reverse (36044636), we get a palindrome (99688699).

The spelling of 63644063 in words is "sixty-three million, six hundred forty-four thousand, sixty-three".