66969283 has 2 divisors, whose sum is σ = 66969284. Its totient is φ = 66969282.

The previous prime is 66969241. The next prime is 66969289. The reversal of 66969283 is 38296966.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66969283 is a prime.

It is not a weakly prime, because it can be changed into another prime (66969289) 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, 33484641 + 33484642.

It is an arithmetic number, because the mean of its divisors is an integer number (33484642).

Almost surely, 2^66969283 is an apocalyptic number.

66969283 is a deficient number, since it is larger than the sum of its proper divisors (1).

66969283 is an equidigital number, since it uses as much as digits as its factorization.

66969283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 66969283 is about 8183.4762173541. The cubic root of 66969283 is about 406.0927316149.

The spelling of 66969283 in words is "sixty-six million, nine hundred sixty-nine thousand, two hundred eighty-three".