63389568 has 128 divisors (see below), whose sum is σ = 188496000. Its totient is φ = 18708480.

The previous prime is 63389527. The next prime is 63389591. The reversal of 63389568 is 86598336.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a zygodrome in base 2.

It is a congruent number.

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, 181458 + ... + 181806.

It is an arithmetic number, because the mean of its divisors is an integer number (1472625).

Almost surely, 2^63389568 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 63389568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94248000).

63389568 is an abundant number, since it is smaller than the sum of its proper divisors (125106432).

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

63389568 is a wasteful number, since it uses less digits than its factorization.

63389568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 408 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 63389568 is about 7961.7565901000. The cubic root of 63389568 is about 398.7242018405.

The spelling of 63389568 in words is "sixty-three million, three hundred eighty-nine thousand, five hundred sixty-eight".