63811072 has 40 divisors (see below), whose sum is σ = 137319336. Its totient is φ = 29448192.

The previous prime is 63811067. The next prime is 63811073. The reversal of 63811072 is 27011836.

It is a self number, because there is not a number n which added to its sum of digits gives 63811072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63811073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863 + ... + 11449.

Almost surely, 2^63811072 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 63811072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68659668).

63811072 is an abundant number, since it is smaller than the sum of its proper divisors (73508264).

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

63811072 is an equidigital number, since it uses as much as digits as its factorization.

63811072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618 (or 9602 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 63811072 is about 7988.1832728099. The cubic root of 63811072 is about 399.6060120612.

The spelling of 63811072 in words is "sixty-three million, eight hundred eleven thousand, seventy-two".