66410129 has 2 divisors, whose sum is σ = 66410130. Its totient is φ = 66410128.

The previous prime is 66410101. The next prime is 66410159. The reversal of 66410129 is 92101466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 719104 = 8105^2 + 848^2 .

It is a cyclic number.

It is not a de Polignac number, because 66410129 - 2¹² = 66406033 is a prime.

It is not a weakly prime, because it can be changed into another prime (66410159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33205064 + 33205065.

It is an arithmetic number, because the mean of its divisors is an integer number (33205065).

Almost surely, 2^66410129 is an apocalyptic number.

It is an amenable number.

66410129 is a deficient number, since it is larger than the sum of its proper divisors (1).

66410129 is an equidigital number, since it uses as much as digits as its factorization.

66410129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 66410129 is about 8149.2410076031. The cubic root of 66410129 is about 404.9593598402.

The spelling of 66410129 in words is "sixty-six million, four hundred ten thousand, one hundred twenty-nine".