66230771 has 2 divisors, whose sum is σ = 66230772. Its totient is φ = 66230770.

The previous prime is 66230767. The next prime is 66230779. The reversal of 66230771 is 17703266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66230771 - 2² = 66230767 is a prime.

It is not a weakly prime, because it can be changed into another prime (66230779) 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, 33115385 + 33115386.

It is an arithmetic number, because the mean of its divisors is an integer number (33115386).

Almost surely, 2^66230771 is an apocalyptic number.

66230771 is a deficient number, since it is larger than the sum of its proper divisors (1).

66230771 is an equidigital number, since it uses as much as digits as its factorization.

66230771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 66230771 is about 8138.2289842447. The cubic root of 66230771 is about 404.5944647650.

The spelling of 66230771 in words is "sixty-six million, two hundred thirty thousand, seven hundred seventy-one".