66532271 has 8 divisors (see below), whose sum is σ = 75865104. Its totient is φ = 57801600.

The previous prime is 66532247. The next prime is 66532289. The reversal of 66532271 is 17223566.

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 66532271 - 2¹⁰ = 66531247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66532201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150305 + ... + 150746.

It is an arithmetic number, because the mean of its divisors is an integer number (9483138).

Almost surely, 2^66532271 is an apocalyptic number.

66532271 is a deficient number, since it is larger than the sum of its proper divisors (9332833).

66532271 is a wasteful number, since it uses less digits than its factorization.

66532271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301081.

The product of its digits is 15120, while the sum is 32.

The square root of 66532271 is about 8156.7316371203. The cubic root of 66532271 is about 405.2074758724.

The spelling of 66532271 in words is "sixty-six million, five hundred thirty-two thousand, two hundred seventy-one".