66473227 has 8 divisors (see below), whose sum is σ = 68724656. Its totient is φ = 64253952.

The previous prime is 66473171. The next prime is 66473233. The reversal of 66473227 is 72237466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66473227 - 2¹¹ = 66471179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66473237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3798 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (8590582).

Almost surely, 2^66473227 is an apocalyptic number.

66473227 is a deficient number, since it is larger than the sum of its proper divisors (2251429).

66473227 is a wasteful number, since it uses less digits than its factorization.

66473227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16077.

The product of its digits is 84672, while the sum is 37.

The square root of 66473227 is about 8153.1114919397. Note that the first 3 decimals coincide. The cubic root of 66473227 is about 405.0875734012.

The spelling of 66473227 in words is "sixty-six million, four hundred seventy-three thousand, two hundred twenty-seven".