105668281 has 2 divisors, whose sum is σ = 105668282. Its totient is φ = 105668280.

The previous prime is 105668249. The next prime is 105668293. The reversal of 105668281 is 182866501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79566400 + 26101881 = 8920^2 + 5109^2 .

It is a cyclic number.

It is not a de Polignac number, because 105668281 - 2⁵ = 105668249 is a prime.

It is a super-2 number, since 2×105668281² = 22331571218989922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105668281.

It is not a weakly prime, because it can be changed into another prime (105668231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52834140 + 52834141.

It is an arithmetic number, because the mean of its divisors is an integer number (52834141).

Almost surely, 2^105668281 is an apocalyptic number.

It is an amenable number.

105668281 is a deficient number, since it is larger than the sum of its proper divisors (1).

105668281 is an equidigital number, since it uses as much as digits as its factorization.

105668281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 105668281 is about 10279.5078189571. The cubic root of 105668281 is about 472.7681536402.

The spelling of 105668281 in words is "one hundred five million, six hundred sixty-eight thousand, two hundred eighty-one".