63894320 has 80 divisors (see below), whose sum is σ = 172274688. Its totient is φ = 21584640.

The previous prime is 63894251. The next prime is 63894353. The reversal of 63894320 is 2349836.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38957 + ... + 40563.

Almost surely, 2^63894320 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 63894320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86137344).

63894320 is an abundant number, since it is smaller than the sum of its proper divisors (108380368).

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

63894320 is a wasteful number, since it uses less digits than its factorization.

63894320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 63894320 is about 7993.3922711199. The cubic root of 63894320 is about 399.7797120386.

The spelling of 63894320 in words is "sixty-three million, eight hundred ninety-four thousand, three hundred twenty".