64860288 has 64 divisors (see below), whose sum is σ = 174925920. Its totient is φ = 21288960.

The previous prime is 64860251. The next prime is 64860317. The reversal of 64860288 is 88206846.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24468 + ... + 26988.

Almost surely, 2^64860288 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 64860288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87462960).

64860288 is an abundant number, since it is smaller than the sum of its proper divisors (110065632).

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

64860288 is a wasteful number, since it uses less digits than its factorization.

64860288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 64860288 is about 8053.5885169283. The cubic root of 64860288 is about 401.7842955553.

The spelling of 64860288 in words is "sixty-four million, eight hundred sixty thousand, two hundred eighty-eight".