5605990621 has 24 divisors (see below), whose sum is σ = 7064789760. Its totient is φ = 4354315680.

The previous prime is 5605990613. The next prime is 5605990723. The reversal of 5605990621 is 1260995065.

It is not a de Polignac number, because 5605990621 - 2³ = 5605990613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5605990321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258060 + ... + 278938.

It is an arithmetic number, because the mean of its divisors is an integer number (294366240).

Almost surely, 2^5605990621 is an apocalyptic number.

It is an amenable number.

5605990621 is a deficient number, since it is larger than the sum of its proper divisors (1458799139).

5605990621 is a wasteful number, since it uses less digits than its factorization.

5605990621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21225 (or 21214 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 5605990621 is about 74873.1635567778. The cubic root of 5605990621 is about 1776.4410035778.

The spelling of 5605990621 in words is "five billion, six hundred five million, nine hundred ninety thousand, six hundred twenty-one".