6221983664 has 40 divisors (see below), whose sum is σ = 13028405712. Its totient is φ = 2861510400.

The previous prime is 6221983661. The next prime is 6221983693. The reversal of 6221983664 is 4663891226.

It is not an unprimeable number, because it can be changed into a prime (6221983661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6014 + ... + 111714.

Almost surely, 2^6221983664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6221983664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6514202856).

6221983664 is an abundant number, since it is smaller than the sum of its proper divisors (6806422048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6221983664 is a wasteful number, since it uses less digits than its factorization.

6221983664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106005 (or 105999 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 6221983664 is about 78879.5516214437. The cubic root of 6221983664 is about 1839.2592780949.

The spelling of 6221983664 in words is "six billion, two hundred twenty-one million, nine hundred eighty-three thousand, six hundred sixty-four".