6221705500 has 24 divisors (see below), whose sum is σ = 13588205904. Its totient is φ = 2488682000.

The previous prime is 6221705461. The next prime is 6221705507. The reversal of 6221705500 is 55071226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221705507) 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, 6221206 + ... + 6222205.

It is an arithmetic number, because the mean of its divisors is an integer number (566175246).

Almost surely, 2^6221705500 is an apocalyptic number.

It is an amenable number.

6221705500 is an abundant number, since it is smaller than the sum of its proper divisors (7366500404).

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

6221705500 is a wasteful number, since it uses less digits than its factorization.

6221705500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12443430 (or 12443418 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 6221705500 is about 78877.7883817745. The cubic root of 6221705500 is about 1839.2318686507.

Adding to 6221705500 its reverse (55071226), we get a palindrome (6276776726).

The spelling of 6221705500 in words is "six billion, two hundred twenty-one million, seven hundred five thousand, five hundred".