648127899 has 12 divisors (see below), whose sum is σ = 970858616. Its totient is φ = 432085104.

The previous prime is 648127897. The next prime is 648127901. The reversal of 648127899 is 998721846.

648127899 is a `hidden beast` number, since 6 + 481 + 2 + 78 + 99 = 666.

648127899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648127897) and next prime (648127901).

It is not a de Polignac number, because 648127899 - 2¹ = 648127897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648127891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1333354 + ... + 1333839.

Almost surely, 2^648127899 is an apocalyptic number.

648127899 is a deficient number, since it is larger than the sum of its proper divisors (322730717).

648127899 is an equidigital number, since it uses as much as digits as its factorization.

648127899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667208 (or 2667196 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 648127899 is about 25458.3561723847. The cubic root of 648127899 is about 865.4066712409.

The spelling of 648127899 in words is "six hundred forty-eight million, one hundred twenty-seven thousand, eight hundred ninety-nine".