63877772 has 72 divisors (see below), whose sum is σ = 145076400. Its totient is φ = 24385536.

The previous prime is 63877771. The next prime is 63877783. The reversal of 63877772 is 27777836.

It is not an unprimeable number, because it can be changed into a prime (63877771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62804 + ... + 63812.

It is an arithmetic number, because the mean of its divisors is an integer number (2014950).

Almost surely, 2^63877772 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 63877772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72538200).

63877772 is an abundant number, since it is smaller than the sum of its proper divisors (81198628).

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

63877772 is a wasteful number, since it uses less digits than its factorization.

63877772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1054 counting only the distinct ones).

The product of its digits is 691488, while the sum is 47.

The square root of 63877772 is about 7992.3570991291. The cubic root of 63877772 is about 399.7451960552.

The spelling of 63877772 in words is "sixty-three million, eight hundred seventy-seven thousand, seven hundred seventy-two".