63663684 has 48 divisors (see below), whose sum is σ = 170217600. Its totient is φ = 18141696.

The previous prime is 63663683. The next prime is 63663731. The reversal of 63663684 is 48636636.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (63663683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42012 + ... + 43500.

It is an arithmetic number, because the mean of its divisors is an integer number (3546200).

Almost surely, 2^63663684 is an apocalyptic number.

It is an amenable number.

63663684 is an abundant number, since it is smaller than the sum of its proper divisors (106553916).

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

63663684 is a wasteful number, since it uses less digits than its factorization.

63663684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2010 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 63663684 is about 7978.9525628368. The cubic root of 63663684 is about 399.2981107658.

The spelling of 63663684 in words is "sixty-three million, six hundred sixty-three thousand, six hundred eighty-four".