648789803 has 2 divisors, whose sum is σ = 648789804. Its totient is φ = 648789802.

The previous prime is 648789737. The next prime is 648789811. The reversal of 648789803 is 308987846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648789803 - 2²⁸ = 380354347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (648789403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324394901 + 324394902.

It is an arithmetic number, because the mean of its divisors is an integer number (324394902).

Almost surely, 2^648789803 is an apocalyptic number.

648789803 is a deficient number, since it is larger than the sum of its proper divisors (1).

648789803 is an equidigital number, since it uses as much as digits as its factorization.

648789803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 648789803 is about 25471.3525946307. The cubic root of 648789803 is about 865.7011713705.

The spelling of 648789803 in words is "six hundred forty-eight million, seven hundred eighty-nine thousand, eight hundred three".