66566284 has 6 divisors (see below), whose sum is σ = 116491004. Its totient is φ = 33283140.

The previous prime is 66566267. The next prime is 66566287. The reversal of 66566284 is 48266566.

It is a self number, because there is not a number n which added to its sum of digits gives 66566284.

It is not an unprimeable number, because it can be changed into a prime (66566287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8320782 + ... + 8320789.

Almost surely, 2^66566284 is an apocalyptic number.

It is an amenable number.

66566284 is a deficient number, since it is larger than the sum of its proper divisors (49924720).

66566284 is a wasteful number, since it uses less digits than its factorization.

66566284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16641575 (or 16641573 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 66566284 is about 8158.8163357193. The cubic root of 66566284 is about 405.2765149202.

The spelling of 66566284 in words is "sixty-six million, five hundred sixty-six thousand, two hundred eighty-four".