6648611782 has 8 divisors (see below), whose sum is σ = 9989513352. Its totient is φ = 3318774000.

The previous prime is 6648611773. The next prime is 6648611789. The reversal of 6648611782 is 2871168466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648611789) 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, 2764444 + ... + 2766847.

It is an arithmetic number, because the mean of its divisors is an integer number (1248689169).

Almost surely, 2^6648611782 is an apocalyptic number.

6648611782 is a deficient number, since it is larger than the sum of its proper divisors (3340901570).

6648611782 is a wasteful number, since it uses less digits than its factorization.

6648611782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531894.

The product of its digits is 774144, while the sum is 49.

The square root of 6648611782 is about 81539.0199965636. The cubic root of 6648611782 is about 1880.3714919641.

The spelling of 6648611782 in words is "six billion, six hundred forty-eight million, six hundred eleven thousand, seven hundred eighty-two".