63446568 has 16 divisors (see below), whose sum is σ = 158616480. Its totient is φ = 21148848.

The previous prime is 63446561. The next prime is 63446597. The reversal of 63446568 is 86564436.

It is not an unprimeable number, because it can be changed into a prime (63446561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321780 + ... + 1321827.

It is an arithmetic number, because the mean of its divisors is an integer number (9913530).

Almost surely, 2^63446568 is an apocalyptic number.

It is an amenable number.

63446568 is an abundant number, since it is smaller than the sum of its proper divisors (95169912).

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

63446568 is a wasteful number, since it uses less digits than its factorization.

63446568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643616 (or 2643612 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 63446568 is about 7965.3353978348. The cubic root of 63446568 is about 398.8436771816.

The spelling of 63446568 in words is "sixty-three million, four hundred forty-six thousand, five hundred sixty-eight".