166684313 has 2 divisors, whose sum is σ = 166684314. Its totient is φ = 166684312.

The previous prime is 166684307. The next prime is 166684333. The reversal of 166684313 is 313486661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89718784 + 76965529 = 9472^2 + 8773^2 .

It is a cyclic number.

It is not a de Polignac number, because 166684313 - 2²⁰ = 165635737 is a prime.

It is not a weakly prime, because it can be changed into another prime (166684333) 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, 83342156 + 83342157.

It is an arithmetic number, because the mean of its divisors is an integer number (83342157).

Almost surely, 2^166684313 is an apocalyptic number.

It is an amenable number.

166684313 is a deficient number, since it is larger than the sum of its proper divisors (1).

166684313 is an equidigital number, since it uses as much as digits as its factorization.

166684313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 166684313 is about 12910.6279088199. The cubic root of 166684313 is about 550.3406297666.

The spelling of 166684313 in words is "one hundred sixty-six million, six hundred eighty-four thousand, three hundred thirteen".