648803 has 2 divisors, whose sum is σ = 648804. Its totient is φ = 648802.

The previous prime is 648779. The next prime is 648841. The reversal of 648803 is 308846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648803 - 2¹⁶ = 583267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (648863) 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, 324401 + 324402.

It is an arithmetic number, because the mean of its divisors is an integer number (324402).

2⁶⁴⁸⁸⁰³ is an apocalyptic number.

648803 is a deficient number, since it is larger than the sum of its proper divisors (1).

648803 is an equidigital number, since it uses as much as digits as its factorization.

648803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 648803 is about 805.4830848627. The cubic root of 648803 is about 86.5707041058.

The spelling of 648803 in words is "six hundred forty-eight thousand, eight hundred three".