6648644662 has 32 divisors (see below), whose sum is σ = 10997752320. Its totient is φ = 2989378080.

The previous prime is 6648644657. The next prime is 6648644677. The reversal of 6648644662 is 2664468466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1949763 + ... + 1953169.

It is an arithmetic number, because the mean of its divisors is an integer number (343679760).

Almost surely, 2^6648644662 is an apocalyptic number.

6648644662 is a deficient number, since it is larger than the sum of its proper divisors (4349107658).

6648644662 is a wasteful number, since it uses less digits than its factorization.

6648644662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356.

The product of its digits is 7962624, while the sum is 52.

The square root of 6648644662 is about 81539.2216175749. The cubic root of 6648644662 is about 1880.3745916845.

The spelling of 6648644662 in words is "six billion, six hundred forty-eight million, six hundred forty-four thousand, six hundred sixty-two".