63993936 has 40 divisors (see below), whose sum is σ = 165753280. Its totient is φ = 21275136.

The previous prime is 63993929. The next prime is 63993947. The reversal of 63993936 is 63939936.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 19245 + ... + 22323.

It is an arithmetic number, because the mean of its divisors is an integer number (4143832).

Almost surely, 2^63993936 is an apocalyptic number.

It is an amenable number.

63993936 is an abundant number, since it is smaller than the sum of its proper divisors (101759344).

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

63993936 is a wasteful number, since it uses less digits than its factorization.

63993936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523 (or 3517 counting only the distinct ones).

The product of its digits is 708588, while the sum is 48.

The square root of 63993936 is about 7999.6209910220. The cubic root of 63993936 is about 399.9873662676.

The spelling of 63993936 in words is "sixty-three million, nine hundred ninety-three thousand, nine hundred thirty-six".