66684237284 has 48 divisors (see below), whose sum is σ = 133759481856. Its totient is φ = 28495303200.

The previous prime is 66684237233. The next prime is 66684237289. The reversal of 66684237284 is 48273248666.

It is not an unprimeable number, because it can be changed into a prime (66684237289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17440997 + ... + 17444819.

It is an arithmetic number, because the mean of its divisors is an integer number (2786655872).

Almost surely, 2^66684237284 is an apocalyptic number.

It is an amenable number.

66684237284 is an abundant number, since it is smaller than the sum of its proper divisors (67075244572).

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

66684237284 is a wasteful number, since it uses less digits than its factorization.

66684237284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496 (or 5494 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 56.

The spelling of 66684237284 in words is "sixty-six billion, six hundred eighty-four million, two hundred thirty-seven thousand, two hundred eighty-four".