2005536621 has 32 divisors (see below), whose sum is σ = 3081876480. Its totient is φ = 1147305600.

The previous prime is 2005536593. The next prime is 2005536647. The reversal of 2005536621 is 1266355002.

It is not a de Polignac number, because 2005536621 - 2⁹ = 2005536109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005536691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170496 + ... + 181878.

It is an arithmetic number, because the mean of its divisors is an integer number (96308640).

Almost surely, 2^2005536621 is an apocalyptic number.

It is an amenable number.

2005536621 is a deficient number, since it is larger than the sum of its proper divisors (1076339859).

2005536621 is a wasteful number, since it uses less digits than its factorization.

2005536621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2005536621 is about 44783.2180732917. The cubic root of 2005536621 is about 1261.0825962702.

The spelling of 2005536621 in words is "two billion, five million, five hundred thirty-six thousand, six hundred twenty-one".