64448488 has 48 divisors (see below), whose sum is σ = 132847020. Its totient is φ = 29293056.

The previous prime is 64448471. The next prime is 64448497. The reversal of 64448488 is 88484446.

It can be written as a sum of positive squares in 6 ways, for example, as 5189284 + 59259204 = 2278^2 + 7698^2 .

It is a super-2 number, since 2×64448488² = 8307215210972288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98370 + ... + 99022.

Almost surely, 2^64448488 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 64448488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66423510).

64448488 is an abundant number, since it is smaller than the sum of its proper divisors (68398532).

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

64448488 is a wasteful number, since it uses less digits than its factorization.

64448488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 741 counting only the distinct ones).

The product of its digits is 786432, while the sum is 46.

The square root of 64448488 is about 8027.9815645030. The cubic root of 64448488 is about 400.9321759325.

The spelling of 64448488 in words is "sixty-four million, four hundred forty-eight thousand, four hundred eighty-eight".