63955872 has 96 divisors (see below), whose sum is σ = 189100800. Its totient is φ = 21026304.

The previous prime is 63955867. The next prime is 63955889. The reversal of 63955872 is 27855936.

It is a happy number.

63955872 is a `hidden beast` number, since 63 + 9 + 5 + 587 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67788 + ... + 68724.

It is an arithmetic number, because the mean of its divisors is an integer number (1969800).

Almost surely, 2^63955872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63955872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94550400).

63955872 is an abundant number, since it is smaller than the sum of its proper divisors (125144928).

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

63955872 is a wasteful number, since it uses less digits than its factorization.

63955872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1021 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 63955872 is about 7997.2415244258. The cubic root of 63955872 is about 399.9080455292.

The spelling of 63955872 in words is "sixty-three million, nine hundred fifty-five thousand, eight hundred seventy-two".