63751216 has 40 divisors (see below), whose sum is σ = 129705984. Its totient is φ = 30296640.

The previous prime is 63751201. The next prime is 63751217. The reversal of 63751216 is 61215736.

It is not an unprimeable number, because it can be changed into a prime (63751217) 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 7 ways as a sum of consecutive naturals, for example, 69835 + ... + 70741.

Almost surely, 2^63751216 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 63751216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64852992).

63751216 is an abundant number, since it is smaller than the sum of its proper divisors (65954768).

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

63751216 is a wasteful number, since it uses less digits than its factorization.

63751216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1123 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 63751216 is about 7984.4358598463. The cubic root of 63751216 is about 399.4810269587.

The spelling of 63751216 in words is "sixty-three million, seven hundred fifty-one thousand, two hundred sixteen".