6648004879 has 4 divisors (see below), whose sum is σ = 6649245720. Its totient is φ = 6646764040.

The previous prime is 6648004877. The next prime is 6648004897. The reversal of 6648004879 is 9784008466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6648004879 - 2¹ = 6648004877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648004877) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 612349 + ... + 623110.

It is an arithmetic number, because the mean of its divisors is an integer number (1662311430).

Almost surely, 2^6648004879 is an apocalyptic number.

6648004879 is a deficient number, since it is larger than the sum of its proper divisors (1240841).

6648004879 is a wasteful number, since it uses less digits than its factorization.

6648004879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240840.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 6648004879 is about 81535.2983621204. The cubic root of 6648004879 is about 1880.3142751163.

The spelling of 6648004879 in words is "six billion, six hundred forty-eight million, four thousand, eight hundred seventy-nine".