164322817 has 2 divisors, whose sum is σ = 164322818. Its totient is φ = 164322816.

The previous prime is 164322797. The next prime is 164322827. The reversal of 164322817 is 718223461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92140801 + 72182016 = 9599^2 + 8496^2 .

It is a cyclic number.

It is not a de Polignac number, because 164322817 - 2¹¹ = 164320769 is a prime.

It is not a weakly prime, because it can be changed into another prime (164322827) 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, 82161408 + 82161409.

It is an arithmetic number, because the mean of its divisors is an integer number (82161409).

Almost surely, 2^164322817 is an apocalyptic number.

It is an amenable number.

164322817 is a deficient number, since it is larger than the sum of its proper divisors (1).

164322817 is an equidigital number, since it uses as much as digits as its factorization.

164322817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 164322817 is about 12818.8461649245. The cubic root of 164322817 is about 547.7292793654.

The spelling of 164322817 in words is "one hundred sixty-four million, three hundred twenty-two thousand, eight hundred seventeen".