2005606879 has 2 divisors, whose sum is σ = 2005606880. Its totient is φ = 2005606878.

The previous prime is 2005606873. The next prime is 2005606913. The reversal of 2005606879 is 9786065002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005606879 - 2²¹ = 2003509727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005606873) by changing a digit.

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 as a sum of consecutive naturals, namely, 1002803439 + 1002803440.

It is an arithmetic number, because the mean of its divisors is an integer number (1002803440).

Almost surely, 2^2005606879 is an apocalyptic number.

2005606879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005606879 is an equidigital number, since it uses as much as digits as its factorization.

2005606879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 2005606879 is about 44784.0024897284. The cubic root of 2005606879 is about 1261.0973221887.

The spelling of 2005606879 in words is "two billion, five million, six hundred six thousand, eight hundred seventy-nine".