66484573 has 2 divisors, whose sum is σ = 66484574. Its totient is φ = 66484572.

The previous prime is 66484549. The next prime is 66484589. The reversal of 66484573 is 37548466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58033924 + 8450649 = 7618^2 + 2907^2 .

It is a cyclic number.

It is not a de Polignac number, because 66484573 - 2⁵ = 66484541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66482573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33242286 + 33242287.

It is an arithmetic number, because the mean of its divisors is an integer number (33242287).

Almost surely, 2^66484573 is an apocalyptic number.

It is an amenable number.

66484573 is a deficient number, since it is larger than the sum of its proper divisors (1).

66484573 is an equidigital number, since it uses as much as digits as its factorization.

66484573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 43.

The square root of 66484573 is about 8153.8072702266. The cubic root of 66484573 is about 405.1106195825.

The spelling of 66484573 in words is "sixty-six million, four hundred eighty-four thousand, five hundred seventy-three".