6505393 has 2 divisors, whose sum is σ = 6505394. Its totient is φ = 6505392.

The previous prime is 6505363. The next prime is 6505409. The reversal of 6505393 is 3935056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5094049 + 1411344 = 2257^2 + 1188^2 .

It is a cyclic number.

It is not a de Polignac number, because 6505393 - 2⁵ = 6505361 is a prime.

It is not a weakly prime, because it can be changed into another prime (6505333) 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, 3252696 + 3252697.

It is an arithmetic number, because the mean of its divisors is an integer number (3252697).

Almost surely, 2^6505393 is an apocalyptic number.

It is an amenable number.

6505393 is a deficient number, since it is larger than the sum of its proper divisors (1).

6505393 is an equidigital number, since it uses as much as digits as its factorization.

6505393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 6505393 is about 2550.5671918222. The cubic root of 6505393 is about 186.6771575028.

The spelling of 6505393 in words is "six million, five hundred five thousand, three hundred ninety-three".