66430963 has 2 divisors, whose sum is σ = 66430964. Its totient is φ = 66430962.

The previous prime is 66430957. The next prime is 66430979. The reversal of 66430963 is 36903466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66430963 - 2²¹ = 64333811 is a prime.

It is not a weakly prime, because it can be changed into another prime (66430933) 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, 33215481 + 33215482.

It is an arithmetic number, because the mean of its divisors is an integer number (33215482).

Almost surely, 2^66430963 is an apocalyptic number.

66430963 is a deficient number, since it is larger than the sum of its proper divisors (1).

66430963 is an equidigital number, since it uses as much as digits as its factorization.

66430963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 66430963 is about 8150.5191859169. The cubic root of 66430963 is about 405.0017029853.

The spelling of 66430963 in words is "sixty-six million, four hundred thirty thousand, nine hundred sixty-three".