63439716 has 48 divisors (see below), whose sum is σ = 158336640. Its totient is φ = 19699200.

The previous prime is 63439711. The next prime is 63439759. The reversal of 63439716 is 61793436.

It is not an unprimeable number, because it can be changed into a prime (63439711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19065 + ... + 22143.

It is an arithmetic number, because the mean of its divisors is an integer number (3298680).

Almost surely, 2^63439716 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 63439716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79168320).

63439716 is an abundant number, since it is smaller than the sum of its proper divisors (94896924).

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

63439716 is a wasteful number, since it uses less digits than its factorization.

63439716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 3202 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 63439716 is about 7964.9052725064. The cubic root of 63439716 is about 398.8293187729.

The spelling of 63439716 in words is "sixty-three million, four hundred thirty-nine thousand, seven hundred sixteen".