648896811 has 8 divisors (see below), whose sum is σ = 866323920. Its totient is φ = 432033792.

The previous prime is 648896803. The next prime is 648896839. The reversal of 648896811 is 118698846.

648896811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648896811 - 2³ = 648896803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648896881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138330 + ... + 142943.

It is an arithmetic number, because the mean of its divisors is an integer number (108290490).

Almost surely, 2^648896811 is an apocalyptic number.

648896811 is a deficient number, since it is larger than the sum of its proper divisors (217427109).

648896811 is a wasteful number, since it uses less digits than its factorization.

648896811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282045.

The product of its digits is 663552, while the sum is 51.

The square root of 648896811 is about 25473.4530639252. The cubic root of 648896811 is about 865.7487634966.

The spelling of 648896811 in words is "six hundred forty-eight million, eight hundred ninety-six thousand, eight hundred eleven".