63973872 has 60 divisors (see below), whose sum is σ = 181998024. Its totient is φ = 20972160.

The previous prime is 63973867. The next prime is 63973919. The reversal of 63973872 is 27837936.

It is a happy number.

63973872 is a `hidden beast` number, since 639 + 7 + 3 + 8 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5143 + ... + 12425.

Almost surely, 2^63973872 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 63973872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90999012).

63973872 is an abundant number, since it is smaller than the sum of its proper divisors (118024152).

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

63973872 is a wasteful number, since it uses less digits than its factorization.

63973872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7358 (or 7349 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 63973872 is about 7998.3668332979. The cubic root of 63973872 is about 399.9455592575.

The spelling of 63973872 in words is "sixty-three million, nine hundred seventy-three thousand, eight hundred seventy-two".