7666650169 has 2 divisors, whose sum is σ = 7666650170. Its totient is φ = 7666650168.

The previous prime is 7666650139. The next prime is 7666650197. The reversal of 7666650169 is 9610566667.

7666650169 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4708704400 + 2957945769 = 68620^2 + 54387^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666650169 - 2¹⁷ = 7666519097 is a prime.

It is a super-2 number, since 2×7666650169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7666650139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833325084 + 3833325085.

It is an arithmetic number, because the mean of its divisors is an integer number (3833325085).

Almost surely, 2^7666650169 is an apocalyptic number.

It is an amenable number.

7666650169 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666650169 is an equidigital number, since it uses as much as digits as its factorization.

7666650169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 7666650169 is about 87559.4093687252. The cubic root of 7666650169 is about 1971.8258188609.

The spelling of 7666650169 in words is "seven billion, six hundred sixty-six million, six hundred fifty thousand, one hundred sixty-nine".