66448104 has 128 divisors (see below), whose sum is σ = 187971840. Its totient is φ = 19464192.

The previous prime is 66448069. The next prime is 66448133. The reversal of 66448104 is 40184466.

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 31 ways as a sum of consecutive naturals, for example, 684984 + ... + 685080.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^66448104 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 66448104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93985920).

66448104 is an abundant number, since it is smaller than the sum of its proper divisors (121523736).

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

66448104 is a wasteful number, since it uses less digits than its factorization.

66448104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 66448104 is about 8151.5706462006. The cubic root of 66448104 is about 405.0365338175.

The spelling of 66448104 in words is "sixty-six million, four hundred forty-eight thousand, one hundred four".