63544005 has 48 divisors (see below), whose sum is σ = 127979904. Its totient is φ = 28563840.

The previous prime is 63543967. The next prime is 63544027. The reversal of 63544005 is 50044536.

It is not a de Polignac number, because 63544005 - 2⁶ = 63543941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63544005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17562 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (2666248).

Almost surely, 2^63544005 is an apocalyptic number.

It is an amenable number.

63544005 is an abundant number, since it is smaller than the sum of its proper divisors (64435899).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63544005 is a wasteful number, since it uses less digits than its factorization.

63544005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 63544005 is about 7971.4493663323. The cubic root of 63544005 is about 399.0477452428.

The spelling of 63544005 in words is "sixty-three million, five hundred forty-four thousand, five".