2² × 13 × 109 × 113

Prime Factor Structure

Factorization String 2^2 × 13 × 109 × 113

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,228,920

Proper Divisor Sum 588,436

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #640483 ← → #640499

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

640,484 320,242 160,121 480,364 240,182 120,091 360,274 180,137 540,412 270,206 135,103 405,310 202,655 607,966 303,983 911,950 455,975 1,367,926 683,963 2,051,890 1,025,945 3,077,836 1,538,918 769,459 2,308,378 1,154,189 3,462,568 1,731,284 865,642 432,821 1,298,464 649,232 324,616 162,308 81,154 40,577 121,732 60,866 30,433 91,300 45,650 22,825 68,476 34,238 17,119 51,358 25,679 77,038 38,519 115,558 57,779 173,338 86,669 260,008 130,004 65,002 32,501 97,504 48,752 24,376

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.