66322079 has 2 divisors, whose sum is σ = 66322080. Its totient is φ = 66322078.

The previous prime is 66322057. The next prime is 66322097. The reversal of 66322079 is 97022366.

It is a happy number.

Together with next prime (66322097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66322079 - 2¹⁶ = 66256543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66322099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33161039 + 33161040.

It is an arithmetic number, because the mean of its divisors is an integer number (33161040).

Almost surely, 2^66322079 is an apocalyptic number.

66322079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66322079 is an equidigital number, since it uses as much as digits as its factorization.

66322079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66322079 is about 8143.8368721383. The cubic root of 66322079 is about 404.7803086308.

The spelling of 66322079 in words is "sixty-six million, three hundred twenty-two thousand, seventy-nine".