20568193 has 2 divisors, whose sum is σ = 20568194. Its totient is φ = 20568192.

The previous prime is 20568151. The next prime is 20568209. The reversal of 20568193 is 39186502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14531344 + 6036849 = 3812^2 + 2457^2 .

It is a cyclic number.

It is not a de Polignac number, because 20568193 - 2¹⁷ = 20437121 is a prime.

It is not a weakly prime, because it can be changed into another prime (20568103) 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, 10284096 + 10284097.

It is an arithmetic number, because the mean of its divisors is an integer number (10284097).

Almost surely, 2^20568193 is an apocalyptic number.

It is an amenable number.

20568193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20568193 is an equidigital number, since it uses as much as digits as its factorization.

20568193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20568193 is about 4535.2169738613. The cubic root of 20568193 is about 273.9883180059.

The spelling of 20568193 in words is "twenty million, five hundred sixty-eight thousand, one hundred ninety-three".