66065448 has 32 divisors (see below), whose sum is σ = 165821760. Its totient is φ = 21934080.

The previous prime is 66065437. The next prime is 66065471. The reversal of 66065448 is 84456066.

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, 813 + ... + 11523.

It is an arithmetic number, because the mean of its divisors is an integer number (5181930).

Almost surely, 2^66065448 is an apocalyptic number.

It is an amenable number.

66065448 is an abundant number, since it is smaller than the sum of its proper divisors (99756312).

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

66065448 is a wasteful number, since it uses less digits than its factorization.

66065448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10977 (or 10973 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 66065448 is about 8128.0654524924. The cubic root of 66065448 is about 404.2575392838.

The spelling of 66065448 in words is "sixty-six million, sixty-five thousand, four hundred forty-eight".