66063251 has 2 divisors, whose sum is σ = 66063252. Its totient is φ = 66063250.

The previous prime is 66063227. The next prime is 66063253. The reversal of 66063251 is 15236066.

66063251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66063251 - 2¹⁴ = 66046867 is a prime.

It is a Sophie Germain prime.

Together with 66063253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66063253) 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, 33031625 + 33031626.

It is an arithmetic number, because the mean of its divisors is an integer number (33031626).

Almost surely, 2^66063251 is an apocalyptic number.

66063251 is a deficient number, since it is larger than the sum of its proper divisors (1).

66063251 is an equidigital number, since it uses as much as digits as its factorization.

66063251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66063251 is about 8127.9303023587. The cubic root of 66063251 is about 404.2530580525.

The spelling of 66063251 in words is "sixty-six million, sixty-three thousand, two hundred fifty-one".