66254063 has 2 divisors, whose sum is σ = 66254064. Its totient is φ = 66254062.

The previous prime is 66254057. The next prime is 66254093. The reversal of 66254063 is 36045266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66254063 - 2²⁰ = 65205487 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 (66254093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33127031 + 33127032.

It is an arithmetic number, because the mean of its divisors is an integer number (33127032).

Almost surely, 2^66254063 is an apocalyptic number.

66254063 is a deficient number, since it is larger than the sum of its proper divisors (1).

66254063 is an equidigital number, since it uses as much as digits as its factorization.

66254063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66254063 is about 8139.6598823292. The cubic root of 66254063 is about 404.6418883901.

The spelling of 66254063 in words is "sixty-six million, two hundred fifty-four thousand, sixty-three".