66227671 has 2 divisors, whose sum is σ = 66227672. Its totient is φ = 66227670.

The previous prime is 66227663. The next prime is 66227701. The reversal of 66227671 is 17672266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66227671 - 2³ = 66227663 is a prime.

It is a super-3 number, since 3×66227671³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66227671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66227641) 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, 33113835 + 33113836.

It is an arithmetic number, because the mean of its divisors is an integer number (33113836).

Almost surely, 2^66227671 is an apocalyptic number.

66227671 is a deficient number, since it is larger than the sum of its proper divisors (1).

66227671 is an equidigital number, since it uses as much as digits as its factorization.

66227671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 66227671 is about 8138.0385228874. The cubic root of 66227671 is about 404.5881521785.

The spelling of 66227671 in words is "sixty-six million, two hundred twenty-seven thousand, six hundred seventy-one".