66429089 has 2 divisors, whose sum is σ = 66429090. Its totient is φ = 66429088.

The previous prime is 66429079. The next prime is 66429119. The reversal of 66429089 is 98092466.

66429089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 28174864 = 6185^2 + 5308^2 .

It is a cyclic number.

It is not a de Polignac number, because 66429089 - 2⁸ = 66428833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66429079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33214544 + 33214545.

It is an arithmetic number, because the mean of its divisors is an integer number (33214545).

Almost surely, 2^66429089 is an apocalyptic number.

It is an amenable number.

66429089 is a deficient number, since it is larger than the sum of its proper divisors (1).

66429089 is an equidigital number, since it uses as much as digits as its factorization.

66429089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 66429089 is about 8150.4042231045. The cubic root of 66429089 is about 404.9978946189.

The spelling of 66429089 in words is "sixty-six million, four hundred twenty-nine thousand, eighty-nine".