66145301 has 2 divisors, whose sum is σ = 66145302. Its totient is φ = 66145300.

The previous prime is 66145297. The next prime is 66145319. The reversal of 66145301 is 10354166.

66145301 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., 65691025 + 454276 = 8105^2 + 674^2 .

It is a cyclic number.

It is not a de Polignac number, because 66145301 - 2² = 66145297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66148301) 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, 33072650 + 33072651.

It is an arithmetic number, because the mean of its divisors is an integer number (33072651).

Almost surely, 2^66145301 is an apocalyptic number.

It is an amenable number.

66145301 is a deficient number, since it is larger than the sum of its proper divisors (1).

66145301 is an equidigital number, since it uses as much as digits as its factorization.

66145301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66145301 is about 8132.9761465284. The cubic root of 66145301 is about 404.4203484422.

Adding to 66145301 its reverse (10354166), we get a palindrome (76499467).

The spelling of 66145301 in words is "sixty-six million, one hundred forty-five thousand, three hundred one".