64388608 has 40 divisors (see below), whose sum is σ = 130641192. Its totient is φ = 31696896.

The previous prime is 64388579. The next prime is 64388633. The reversal of 64388608 is 80688346.

64388608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33366 + ... + 35242.

Almost surely, 2^64388608 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 64388608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65320596).

64388608 is an abundant number, since it is smaller than the sum of its proper divisors (66252584).

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

64388608 is an equidigital number, since it uses as much as digits as its factorization.

64388608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 64388608 is about 8024.2512423278. The cubic root of 64388608 is about 400.8079668750.

The spelling of 64388608 in words is "sixty-four million, three hundred eighty-eight thousand, six hundred eight".