806549 has 2 divisors, whose sum is σ = 806550. Its totient is φ = 806548.

The previous prime is 806543. The next prime is 806579. The reversal of 806549 is 945608.

806549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 117649 = 830^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 806549 - 2¹² = 802453 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403274 + 403275.

It is an arithmetic number, because the mean of its divisors is an integer number (403275).

2⁸⁰⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

806549 is a deficient number, since it is larger than the sum of its proper divisors (1).

806549 is an equidigital number, since it uses as much as digits as its factorization.

806549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 806549 is about 898.0807313377. The cubic root of 806549 is about 93.0844032769.

The spelling of 806549 in words is "eight hundred six thousand, five hundred forty-nine".