20065393 has 2 divisors, whose sum is σ = 20065394. Its totient is φ = 20065392.

The previous prime is 20065351. The next prime is 20065399. The reversal of 20065393 is 39356002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12759184 + 7306209 = 3572^2 + 2703^2 .

It is a cyclic number.

It is not a de Polignac number, because 20065393 - 2⁹ = 20064881 is a prime.

It is equal to p_1274518 and since 20065393 and 1274518 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20065399) 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, 10032696 + 10032697.

It is an arithmetic number, because the mean of its divisors is an integer number (10032697).

Almost surely, 2^20065393 is an apocalyptic number.

It is an amenable number.

20065393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20065393 is an equidigital number, since it uses as much as digits as its factorization.

20065393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 20065393 is about 4479.4411481791. The cubic root of 20065393 is about 271.7372796650.

The spelling of 20065393 in words is "twenty million, sixty-five thousand, three hundred ninety-three".