166276613 has 2 divisors, whose sum is σ = 166276614. Its totient is φ = 166276612.

The previous prime is 166276601. The next prime is 166276661. The reversal of 166276613 is 316672661.

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., 149768644 + 16507969 = 12238^2 + 4063^2 .

It is an emirp because it is prime and its reverse (316672661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166276613 - 2⁶ = 166276549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166276673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83138306 + 83138307.

It is an arithmetic number, because the mean of its divisors is an integer number (83138307).

Almost surely, 2^166276613 is an apocalyptic number.

It is an amenable number.

166276613 is a deficient number, since it is larger than the sum of its proper divisors (1).

166276613 is an equidigital number, since it uses as much as digits as its factorization.

166276613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 166276613 is about 12894.8289248055. The cubic root of 166276613 is about 549.8915631952.

The spelling of 166276613 in words is "one hundred sixty-six million, two hundred seventy-six thousand, six hundred thirteen".