63668208 has 80 divisors (see below), whose sum is σ = 170445440. Its totient is φ = 20466432.

The previous prime is 63668207. The next prime is 63668219. The reversal of 63668208 is 80286636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63668207) 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, 224835 + ... + 225117.

It is an arithmetic number, because the mean of its divisors is an integer number (2130568).

Almost surely, 2^63668208 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 63668208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85222720).

63668208 is an abundant number, since it is smaller than the sum of its proper divisors (106777232).

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

63668208 is a wasteful number, since it uses less digits than its factorization.

63668208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 63668208 is about 7979.2360536583. The cubic root of 63668208 is about 399.3075687056.

The spelling of 63668208 in words is "sixty-three million, six hundred sixty-eight thousand, two hundred eight".