6621941760 has 416 divisors, whose sum is σ = 24628043520. Its totient is φ = 1487929344.

The previous prime is 6621941737. The next prime is 6621941789. The reversal of 6621941760 is 671491266.

It is a super-2 number, since 2×6621941760² = 87700225345663795200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38277034 + ... + 38277206.

Almost surely, 2^6621941760 is an apocalyptic number.

6621941760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6621941760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12314021760).

6621941760 is an abundant number, since it is smaller than the sum of its proper divisors (18006101760).

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

6621941760 is a wasteful number, since it uses less digits than its factorization.

6621941760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6621941760 is about 81375.3141929418. The cubic root of 6621941760 is about 1877.8538358164.

The spelling of 6621941760 in words is "six billion, six hundred twenty-one million, nine hundred forty-one thousand, seven hundred sixty".