6605408250 has 384 divisors, whose sum is σ = 21668774400. Its totient is φ = 1505044800.

The previous prime is 6605408233. The next prime is 6605408287. The reversal of 6605408250 is 528045066.

6605408250 is a `hidden beast` number, since 6 + 60 + 540 + 8 + 2 + 50 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 20837092 + ... + 20837408.

It is an arithmetic number, because the mean of its divisors is an integer number (56429100).

Almost surely, 2^6605408250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6605408250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10834387200).

6605408250 is an abundant number, since it is smaller than the sum of its proper divisors (15063366150).

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

6605408250 is an equidigital number, since it uses as much as digits as its factorization.

6605408250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 6605408250 is about 81273.6627081615. The cubic root of 6605408250 is about 1876.2896727269.

The spelling of 6605408250 in words is "six billion, six hundred five million, four hundred eight thousand, two hundred fifty".