2005775508 has 96 divisors (see below), whose sum is σ = 5389655040. Its totient is φ = 574179840.

The previous prime is 2005775491. The next prime is 2005775531. The reversal of 2005775508 is 8055775002.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1085041 + ... + 1086887.

It is an arithmetic number, because the mean of its divisors is an integer number (56142240).

Almost surely, 2^2005775508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2005775508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2694827520).

2005775508 is an abundant number, since it is smaller than the sum of its proper divisors (3383879532).

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

2005775508 is a wasteful number, since it uses less digits than its factorization.

2005775508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 2005775508 is about 44785.8851425312. The cubic root of 2005775508 is about 1261.1326650439.

The spelling of 2005775508 in words is "two billion, five million, seven hundred seventy-five thousand, five hundred eight".