63981552 has 20 divisors (see below), whose sum is σ = 165285800. Its totient is φ = 21327168.

The previous prime is 63981529. The next prime is 63981587. The reversal of 63981552 is 25518936.

63981552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63981552.

It is a congruent number.

It is an unprimeable number.

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, 666427 + ... + 666522.

It is an arithmetic number, because the mean of its divisors is an integer number (8264290).

Almost surely, 2^63981552 is an apocalyptic number.

It is an amenable number.

63981552 is an abundant number, since it is smaller than the sum of its proper divisors (101304248).

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

63981552 is a wasteful number, since it uses less digits than its factorization.

63981552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332960 (or 1332954 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 63981552 is about 7998.8469169000. The cubic root of 63981552 is about 399.9615629733.

The spelling of 63981552 in words is "sixty-three million, nine hundred eighty-one thousand, five hundred fifty-two".