66837284 has 12 divisors (see below), whose sum is σ = 117433008. Its totient is φ = 33285000.

The previous prime is 66837283. The next prime is 66837317. The reversal of 66837284 is 48273866.

It is not an unprimeable number, because it can be changed into a prime (66837283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 32282 + ... + 34289.

It is an arithmetic number, because the mean of its divisors is an integer number (9786084).

Almost surely, 2^66837284 is an apocalyptic number.

It is an amenable number.

66837284 is a deficient number, since it is larger than the sum of its proper divisors (50595724).

66837284 is a wasteful number, since it uses less digits than its factorization.

66837284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66826 (or 66824 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 66837284 is about 8175.4072681427. The cubic root of 66837284 is about 405.8257480612.

The spelling of 66837284 in words is "sixty-six million, eight hundred thirty-seven thousand, two hundred eighty-four".