66075227 has 4 divisors (see below), whose sum is σ = 67005936. Its totient is φ = 65144520.

The previous prime is 66075223. The next prime is 66075241. The reversal of 66075227 is 72257066.

It is a happy number.

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 66075227 - 2² = 66075223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66075223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465248 + ... + 465389.

It is an arithmetic number, because the mean of its divisors is an integer number (16751484).

Almost surely, 2^66075227 is an apocalyptic number.

66075227 is a deficient number, since it is larger than the sum of its proper divisors (930709).

66075227 is an equidigital number, since it uses as much as digits as its factorization.

66075227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930708.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 66075227 is about 8128.6669878892. Note that the first 3 decimals coincide. The cubic root of 66075227 is about 404.2774843512.

The spelling of 66075227 in words is "sixty-six million, seventy-five thousand, two hundred twenty-seven".