6621408204 has 24 divisors (see below), whose sum is σ = 15457413888. Its totient is φ = 2206070160.

The previous prime is 6621408187. The next prime is 6621408221. The reversal of 6621408204 is 4028041266.

It is an interprime number because it is at equal distance from previous prime (6621408187) and next prime (6621408221).

It is a plaindrome in base 16.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 107152 + ... + 157239.

It is an arithmetic number, because the mean of its divisors is an integer number (644058912).

Almost surely, 2^6621408204 is an apocalyptic number.

It is an amenable number.

6621408204 is an abundant number, since it is smaller than the sum of its proper divisors (8836005684).

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

6621408204 is a wasteful number, since it uses less digits than its factorization.

6621408204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266485 (or 266483 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 6621408204 is about 81372.0357616792. The cubic root of 6621408204 is about 1877.8033990951.

The spelling of 6621408204 in words is "six billion, six hundred twenty-one million, four hundred eight thousand, two hundred four".