2² × 13 × 97 × 127

Prime Factor Structure

Factorization String 2^2 × 13 × 97 × 127

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,229,312

Proper Divisor Sum 588,724

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #640583 ← → #640589

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

640,588 320,294 160,147 480,442 240,221 720,664 360,332 180,166 90,083 270,250 135,125 405,376 202,688 101,344 50,672 25,336 12,668 6,334 3,167 9,502 4,751 14,254 7,127 21,382 10,691 32,074 16,037 48,112 24,056 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910 14,455 43,366 21,683 65,050 32,525 97,576 48,788 24,394

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