166826497 has 2 divisors, whose sum is σ = 166826498. Its totient is φ = 166826496.

The previous prime is 166826483. The next prime is 166826503. The reversal of 166826497 is 794628661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163047361 + 3779136 = 12769^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 166826497 - 2¹⁹ = 166302209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166826497.

It is not a weakly prime, because it can be changed into another prime (166826477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83413248 + 83413249.

It is an arithmetic number, because the mean of its divisors is an integer number (83413249).

Almost surely, 2^166826497 is an apocalyptic number.

It is an amenable number.

166826497 is a deficient number, since it is larger than the sum of its proper divisors (1).

166826497 is an equidigital number, since it uses as much as digits as its factorization.

166826497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 166826497 is about 12916.1332061883. The cubic root of 166826497 is about 550.4970679899.

The spelling of 166826497 in words is "one hundred sixty-six million, eight hundred twenty-six thousand, four hundred ninety-seven".