648383 has 2 divisors, whose sum is σ = 648384. Its totient is φ = 648382.

The previous prime is 648379. The next prime is 648391. The reversal of 648383 is 383846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648383 - 2² = 648379 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648343) 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, 324191 + 324192.

It is an arithmetic number, because the mean of its divisors is an integer number (324192).

2⁶⁴⁸³⁸³ is an apocalyptic number.

648383 is a deficient number, since it is larger than the sum of its proper divisors (1).

648383 is an equidigital number, since it uses as much as digits as its factorization.

648383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 648383 is about 805.2223295463. Note that the first 3 decimals coincide. The cubic root of 648383 is about 86.5520196750.

The spelling of 648383 in words is "six hundred forty-eight thousand, three hundred eighty-three".