66242179 has 2 divisors, whose sum is σ = 66242180. Its totient is φ = 66242178.

The previous prime is 66242167. The next prime is 66242201. The reversal of 66242179 is 97124266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66242179 - 2¹¹ = 66240131 is a prime.

It is not a weakly prime, because it can be changed into another prime (66242159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33121089 + 33121090.

It is an arithmetic number, because the mean of its divisors is an integer number (33121090).

Almost surely, 2^66242179 is an apocalyptic number.

66242179 is a deficient number, since it is larger than the sum of its proper divisors (1).

66242179 is an equidigital number, since it uses as much as digits as its factorization.

66242179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 66242179 is about 8138.9298436588. The cubic root of 66242179 is about 404.6176933872.

The spelling of 66242179 in words is "sixty-six million, two hundred forty-two thousand, one hundred seventy-nine".