63440960 has 112 divisors (see below), whose sum is σ = 167883840. Its totient is φ = 22640640.

The previous prime is 63440941. The next prime is 63440963. The reversal of 63440960 is 6904436.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (63440963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235706 + ... + 235974.

Almost surely, 2^63440960 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 63440960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83941920).

63440960 is an abundant number, since it is smaller than the sum of its proper divisors (104442880).

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

63440960 is a wasteful number, since it uses less digits than its factorization.

63440960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 63440960 is about 7964.9833647033. The cubic root of 63440960 is about 398.8319256594.

The spelling of 63440960 in words is "sixty-three million, four hundred forty thousand, nine hundred sixty".