66682123 has 2 divisors, whose sum is σ = 66682124. Its totient is φ = 66682122.

The previous prime is 66682087. The next prime is 66682151. The reversal of 66682123 is 32128666.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66682123 is a prime.

It is not a weakly prime, because it can be changed into another prime (66682163) 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, 33341061 + 33341062.

It is an arithmetic number, because the mean of its divisors is an integer number (33341062).

Almost surely, 2^66682123 is an apocalyptic number.

66682123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66682123 is an equidigital number, since it uses as much as digits as its factorization.

66682123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 66682123 is about 8165.9122576721. The cubic root of 66682123 is about 405.5114667973.

The spelling of 66682123 in words is "sixty-six million, six hundred eighty-two thousand, one hundred twenty-three".