648343 has 2 divisors, whose sum is σ = 648344. Its totient is φ = 648342.

The previous prime is 648341. The next prime is 648371. The reversal of 648343 is 343846.

It is an a-pointer prime, because the next prime (648371) can be obtained adding 648343 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648343 - 2¹ = 648341 is a prime.

Together with 648341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648341) 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, 324171 + 324172.

It is an arithmetic number, because the mean of its divisors is an integer number (324172).

2⁶⁴⁸³⁴³ is an apocalyptic number.

648343 is a deficient number, since it is larger than the sum of its proper divisors (1).

648343 is an equidigital number, since it uses as much as digits as its factorization.

648343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 648343 is about 805.1974913026. The cubic root of 648343 is about 86.5502397846.

The spelling of 648343 in words is "six hundred forty-eight thousand, three hundred forty-three".