648118826 has 16 divisors (see below), whose sum is σ = 986013000. Its totient is φ = 319469568.

The previous prime is 648118819. The next prime is 648118847. The reversal of 648118826 is 628811846.

It can be written as a sum of positive squares in 4 ways, for example, as 566487601 + 81631225 = 23801^2 + 9035^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 56906 + ... + 67338.

Almost surely, 2^648118826 is an apocalyptic number.

648118826 is a deficient number, since it is larger than the sum of its proper divisors (337894174).

648118826 is a wasteful number, since it uses less digits than its factorization.

648118826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10873.

The product of its digits is 147456, while the sum is 44.

The square root of 648118826 is about 25458.1779787949. The cubic root of 648118826 is about 865.4026330095.

It can be divided in two parts, 64811 and 8826, that added together give a palindrome (73637).

The spelling of 648118826 in words is "six hundred forty-eight million, one hundred eighteen thousand, eight hundred twenty-six".