6221911768 has 8 divisors (see below), whose sum is σ = 11666084580. Its totient is φ = 3110955880.

The previous prime is 6221911763. The next prime is 6221911793. The reversal of 6221911768 is 8671191226.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221911763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388869478 + ... + 388869493.

Almost surely, 2^6221911768 is an apocalyptic number.

It is an amenable number.

6221911768 is a deficient number, since it is larger than the sum of its proper divisors (5444172812).

6221911768 is a wasteful number, since it uses less digits than its factorization.

6221911768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777738977 (or 777738973 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 6221911768 is about 78879.0958873135. The cubic root of 6221911768 is about 1839.2521937575.

The spelling of 6221911768 in words is "six billion, two hundred twenty-one million, nine hundred eleven thousand, seven hundred sixty-eight".