166060813 has 2 divisors, whose sum is σ = 166060814. Its totient is φ = 166060812.

The previous prime is 166060801. The next prime is 166060837. The reversal of 166060813 is 318060661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137992009 + 28068804 = 11747^2 + 5298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166060813 is a prime.

It is a super-2 number, since 2×166060813² = 55152387228441938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166063813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83030406 + 83030407.

It is an arithmetic number, because the mean of its divisors is an integer number (83030407).

Almost surely, 2^166060813 is an apocalyptic number.

It is an amenable number.

166060813 is a deficient number, since it is larger than the sum of its proper divisors (1).

166060813 is an equidigital number, since it uses as much as digits as its factorization.

166060813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 166060813 is about 12886.4585127179. The cubic root of 166060813 is about 549.6535702691.

The spelling of 166060813 in words is "one hundred sixty-six million, sixty thousand, eight hundred thirteen".