648780803 has 16 divisors (see below), whose sum is σ = 762365952. Its totient is φ = 545952000.

The previous prime is 648780793. The next prime is 648780827. The reversal of 648780803 is 308087846.

It is a happy number.

It is not a de Polignac number, because 648780803 - 2⁶ = 648780739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648780833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33518 + ... + 49203.

It is an arithmetic number, because the mean of its divisors is an integer number (47647872).

Almost surely, 2^648780803 is an apocalyptic number.

648780803 is a deficient number, since it is larger than the sum of its proper divisors (113585149).

648780803 is a wasteful number, since it uses less digits than its factorization.

648780803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82786.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 648780803 is about 25471.1759249549. The cubic root of 648780803 is about 865.6971683552.

The spelling of 648780803 in words is "six hundred forty-eight million, seven hundred eighty thousand, eight hundred three".