66227047 has 2 divisors, whose sum is σ = 66227048. Its totient is φ = 66227046.

The previous prime is 66227017. The next prime is 66227059. The reversal of 66227047 is 74072266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66227047 - 2¹¹ = 66224999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66227017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33113523 + 33113524.

It is an arithmetic number, because the mean of its divisors is an integer number (33113524).

Almost surely, 2^66227047 is an apocalyptic number.

66227047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66227047 is an equidigital number, since it uses as much as digits as its factorization.

66227047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 66227047 is about 8138.0001843205. Note that the first 3 decimals coincide. The cubic root of 66227047 is about 404.5868814921.

The spelling of 66227047 in words is "sixty-six million, two hundred twenty-seven thousand, forty-seven".