66517063 has 2 divisors, whose sum is σ = 66517064. Its totient is φ = 66517062.

The previous prime is 66517057. The next prime is 66517069. The reversal of 66517063 is 36071566.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (66517057) and next prime (66517069).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66517063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66517069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33258531 + 33258532.

It is an arithmetic number, because the mean of its divisors is an integer number (33258532).

Almost surely, 2^66517063 is an apocalyptic number.

66517063 is a deficient number, since it is larger than the sum of its proper divisors (1).

66517063 is an equidigital number, since it uses as much as digits as its factorization.

66517063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 66517063 is about 8155.7993477034. The cubic root of 66517063 is about 405.1765993028.

The spelling of 66517063 in words is "sixty-six million, five hundred seventeen thousand, sixty-three".