66283211 has 4 divisors (see below), whose sum is σ = 66619872. Its totient is φ = 65946552.

The previous prime is 66283199. The next prime is 66283213. The reversal of 66283211 is 11238266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66283211 - 2¹⁰ = 66282187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66283213) 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, 168035 + ... + 168428.

It is an arithmetic number, because the mean of its divisors is an integer number (16654968).

Almost surely, 2^66283211 is an apocalyptic number.

66283211 is a deficient number, since it is larger than the sum of its proper divisors (336661).

66283211 is a wasteful number, since it uses less digits than its factorization.

66283211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336660.

The product of its digits is 3456, while the sum is 29.

The square root of 66283211 is about 8141.4501779474. The cubic root of 66283211 is about 404.7012194561.

The spelling of 66283211 in words is "sixty-six million, two hundred eighty-three thousand, two hundred eleven".