6546389 has 2 divisors, whose sum is σ = 6546390. Its totient is φ = 6546388.

The previous prime is 6546361. The next prime is 6546403. The reversal of 6546389 is 9836456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6543364 + 3025 = 2558^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 6546389 - 2¹² = 6542293 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 (6546349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273194 + 3273195.

It is an arithmetic number, because the mean of its divisors is an integer number (3273195).

Almost surely, 2^6546389 is an apocalyptic number.

It is an amenable number.

6546389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6546389 is an equidigital number, since it uses as much as digits as its factorization.

6546389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 6546389 is about 2558.5912139300. The cubic root of 6546389 is about 187.0684736895.

The spelling of 6546389 in words is "six million, five hundred forty-six thousand, three hundred eighty-nine".