66325471 has 2 divisors, whose sum is σ = 66325472. Its totient is φ = 66325470.

The previous prime is 66325451. The next prime is 66325487. The reversal of 66325471 is 17452366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66325471 - 2⁵ = 66325439 is a prime.

It is a super-3 number, since 3×66325471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66325411) 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 as a sum of consecutive naturals, namely, 33162735 + 33162736.

It is an arithmetic number, because the mean of its divisors is an integer number (33162736).

Almost surely, 2^66325471 is an apocalyptic number.

66325471 is a deficient number, since it is larger than the sum of its proper divisors (1).

66325471 is an equidigital number, since it uses as much as digits as its factorization.

66325471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 66325471 is about 8144.0451251206. The cubic root of 66325471 is about 404.7872092558.

The spelling of 66325471 in words is "sixty-six million, three hundred twenty-five thousand, four hundred seventy-one".