6648806469 has 4 divisors (see below), whose sum is σ = 8865075296. Its totient is φ = 4432537644.

The previous prime is 6648806413. The next prime is 6648806531. The reversal of 6648806469 is 9646088466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-6648806469 is a prime.

It is a super-2 number, since 2×6648806469² = 88413254924432495922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648804469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108134409 + ... + 1108134414.

It is an arithmetic number, because the mean of its divisors is an integer number (2216268824).

Almost surely, 2^6648806469 is an apocalyptic number.

It is an amenable number.

6648806469 is a deficient number, since it is larger than the sum of its proper divisors (2216268827).

6648806469 is a wasteful number, since it uses less digits than its factorization.

6648806469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216268826.

The product of its (nonzero) digits is 11943936, while the sum is 57.

The square root of 6648806469 is about 81540.2138150250. The cubic root of 6648806469 is about 1880.3898456858.

The spelling of 6648806469 in words is "six billion, six hundred forty-eight million, eight hundred six thousand, four hundred sixty-nine".