66954683 has 2 divisors, whose sum is σ = 66954684. Its totient is φ = 66954682.

The previous prime is 66954661. The next prime is 66954703. The reversal of 66954683 is 38645966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66954683 - 2¹⁸ = 66692539 is a prime.

It is not a weakly prime, because it can be changed into another prime (66954883) 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, 33477341 + 33477342.

It is an arithmetic number, because the mean of its divisors is an integer number (33477342).

Almost surely, 2^66954683 is an apocalyptic number.

66954683 is a deficient number, since it is larger than the sum of its proper divisors (1).

66954683 is an equidigital number, since it uses as much as digits as its factorization.

66954683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 66954683 is about 8182.5841272791. The cubic root of 66954683 is about 406.0632186575.

The spelling of 66954683 in words is "sixty-six million, nine hundred fifty-four thousand, six hundred eighty-three".