6221866880 has 32 divisors (see below), whose sum is σ = 14874152040. Its totient is φ = 2488746496.

The previous prime is 6221866879. The next prime is 6221866883. The reversal of 6221866880 is 886681226.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221866883) 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, 4860194 + ... + 4861473.

Almost surely, 2^6221866880 is an apocalyptic number.

It is an amenable number.

6221866880 is an abundant number, since it is smaller than the sum of its proper divisors (8652285160).

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

6221866880 is an equidigital number, since it uses as much as digits as its factorization.

6221866880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721686 (or 9721674 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 6221866880 is about 78878.8113500704. The cubic root of 6221866880 is about 1839.2477706501.

The spelling of 6221866880 in words is "six billion, two hundred twenty-one million, eight hundred sixty-six thousand, eight hundred eighty".