648075850 has 24 divisors (see below), whose sum is σ = 1216490220. Its totient is φ = 256849920.

The previous prime is 648075829. The next prime is 648075907. The reversal of 648075850 is 58570846.

It can be written as a sum of positive squares in 6 ways, for example, as 126090441 + 521985409 = 11229^2 + 22847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 648075797 and 648075806.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 54007 + ... + 64906.

Almost surely, 2^648075850 is an apocalyptic number.

648075850 is a deficient number, since it is larger than the sum of its proper divisors (568414370).

648075850 is a wasteful number, since it uses less digits than its factorization.

648075850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119034 (or 119029 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 648075850 is about 25457.3339138253. Note that the first 3 decimals coincide. The cubic root of 648075850 is about 865.3835046418.

The spelling of 648075850 in words is "six hundred forty-eight million, seventy-five thousand, eight hundred fifty".