66654448 has 20 divisors (see below), whose sum is σ = 147592240. Its totient is φ = 28566144.

The previous prime is 66654421. The next prime is 66654487. The reversal of 66654448 is 84445666.

66654448 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, 297453 + ... + 297676.

It is an arithmetic number, because the mean of its divisors is an integer number (7379612).

Almost surely, 2^66654448 is an apocalyptic number.

It is an amenable number.

66654448 is an abundant number, since it is smaller than the sum of its proper divisors (80937792).

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

66654448 is a wasteful number, since it uses less digits than its factorization.

66654448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595144 (or 595138 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 66654448 is about 8164.2175375231. The cubic root of 66654448 is about 405.4553593917.

The spelling of 66654448 in words is "sixty-six million, six hundred fifty-four thousand, four hundred forty-eight".