63684912 has 80 divisors (see below), whose sum is σ = 171671552. Its totient is φ = 20321280.

The previous prime is 63684911. The next prime is 63684917. The reversal of 63684912 is 21948636.

It is not an unprimeable number, because it can be changed into a prime (63684911) 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, 188808 + ... + 189144.

Almost surely, 2^63684912 is an apocalyptic number.

63684912 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63684912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85835776).

63684912 is an abundant number, since it is smaller than the sum of its proper divisors (107986640).

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

63684912 is a wasteful number, since it uses less digits than its factorization.

63684912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 500 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 63684912 is about 7980.2827017594. The cubic root of 63684912 is about 399.3424864487.

The spelling of 63684912 in words is "sixty-three million, six hundred eighty-four thousand, nine hundred twelve".