986543 has 2 divisors, whose sum is σ = 986544. Its totient is φ = 986542.

The previous prime is 986533. The next prime is 986563. The reversal of 986543 is 345689.

It is a weak prime.

It is an emirp because it is prime and its reverse (345689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 986543 - 2⁸ = 986287 is a prime.

It is a Sophie Germain prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986533) 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, 493271 + 493272.

It is an arithmetic number, because the mean of its divisors is an integer number (493272).

2⁹⁸⁶⁵⁴³ is an apocalyptic number.

986543 is a deficient number, since it is larger than the sum of its proper divisors (1).

986543 is an equidigital number, since it uses as much as digits as its factorization.

986543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 986543 is about 993.2487100420. The cubic root of 986543 is about 99.5494060337.

The spelling of 986543 in words is "nine hundred eighty-six thousand, five hundred forty-three".