6221421624 has 64 divisors (see below), whose sum is σ = 16975008000. Its totient is φ = 1884446720.

The previous prime is 6221421623. The next prime is 6221421629. The reversal of 6221421624 is 4261241226.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 6221421591 and 6221421600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221421623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875317 + ... + 882395.

It is an arithmetic number, because the mean of its divisors is an integer number (265234500).

Almost surely, 2^6221421624 is an apocalyptic number.

It is an amenable number.

6221421624 is an abundant number, since it is smaller than the sum of its proper divisors (10753586376).

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

6221421624 is a wasteful number, since it uses less digits than its factorization.

6221421624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10428 (or 10424 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 6221421624 is about 78875.9888939594. The cubic root of 6221421624 is about 1839.2038955208.

It can be divided in two parts, 62214 and 21624, that added together give a palindrome (83838).

The spelling of 6221421624 in words is "six billion, two hundred twenty-one million, four hundred twenty-one thousand, six hundred twenty-four".