63955144 has 32 divisors (see below), whose sum is σ = 131711040. Its totient is φ = 28872000.

The previous prime is 63955141. The next prime is 63955163. The reversal of 63955144 is 44155936.

It is not an unprimeable number, because it can be changed into a prime (63955141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10882 + ... + 15694.

It is an arithmetic number, because the mean of its divisors is an integer number (4115970).

Almost surely, 2^63955144 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 63955144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65855520).

63955144 is an abundant number, since it is smaller than the sum of its proper divisors (67755896).

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

63955144 is a wasteful number, since it uses less digits than its factorization.

63955144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981 (or 4977 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 63955144 is about 7997.1960086020. The cubic root of 63955144 is about 399.9065281592.

The spelling of 63955144 in words is "sixty-three million, nine hundred fifty-five thousand, one hundred forty-four".