6536389 has 2 divisors, whose sum is σ = 6536390. Its totient is φ = 6536388.

The previous prime is 6536377. The next prime is 6536423. The reversal of 6536389 is 9836356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6225025 + 311364 = 2495^2 + 558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6536389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6536329) 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, 3268194 + 3268195.

It is an arithmetic number, because the mean of its divisors is an integer number (3268195).

Almost surely, 2^6536389 is an apocalyptic number.

It is an amenable number.

6536389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6536389 is an equidigital number, since it uses as much as digits as its factorization.

6536389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 6536389 is about 2556.6362666598. The cubic root of 6536389 is about 186.9731723932.

The spelling of 6536389 in words is "six million, five hundred thirty-six thousand, three hundred eighty-nine".