63664463 has 4 divisors (see below), whose sum is σ = 63687288. Its totient is φ = 63641640.

The previous prime is 63664453. The next prime is 63664477. The reversal of 63664463 is 36446636.

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 63664463 - 2⁶ = 63664399 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 (63664453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6533 + ... + 13038.

It is an arithmetic number, because the mean of its divisors is an integer number (15921822).

Almost surely, 2^63664463 is an apocalyptic number.

63664463 is a deficient number, since it is larger than the sum of its proper divisors (22825).

63664463 is a wasteful number, since it uses less digits than its factorization.

63664463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22824.

The product of its digits is 186624, while the sum is 38.

The square root of 63664463 is about 7979.0013786188. The cubic root of 63664463 is about 399.2997393864.

The spelling of 63664463 in words is "sixty-three million, six hundred sixty-four thousand, four hundred sixty-three".