66784248 has 48 divisors (see below), whose sum is σ = 181677600. Its totient is φ = 22162560.

The previous prime is 66784231. The next prime is 66784271. The reversal of 66784248 is 84248766.

It is a congruent number.

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, 15268 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (3784950).

Almost surely, 2^66784248 is an apocalyptic number.

It is an amenable number.

66784248 is an abundant number, since it is smaller than the sum of its proper divisors (114893352).

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

66784248 is a wasteful number, since it uses less digits than its factorization.

66784248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132 (or 4125 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 66784248 is about 8172.1629939692. The cubic root of 66784248 is about 405.7183775010.

The spelling of 66784248 in words is "sixty-six million, seven hundred eighty-four thousand, two hundred forty-eight".