63813936 has 20 divisors (see below), whose sum is σ = 164852792. Its totient is φ = 21271296.

The previous prime is 63813931. The next prime is 63813943. The reversal of 63813936 is 63931836.

It is a junction number, because it is equal to n+sod(n) for n = 63813894 and 63813903.

It is not an unprimeable number, because it can be changed into a prime (63813931) 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, 664681 + ... + 664776.

Almost surely, 2^63813936 is an apocalyptic number.

It is an amenable number.

63813936 is an abundant number, since it is smaller than the sum of its proper divisors (101038856).

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

63813936 is a wasteful number, since it uses less digits than its factorization.

63813936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329468 (or 1329462 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 63813936 is about 7988.3625355889. The cubic root of 63813936 is about 399.6119904098.

The spelling of 63813936 in words is "sixty-three million, eight hundred thirteen thousand, nine hundred thirty-six".