11² × 67 × 79

Prime Factor Structure

Factorization String 11^2 × 67 × 79

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 723,520

Proper Divisor Sum 83,067

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #640421 ← → #640457

1 11 67 79 121 737 869 5,293 8,107 9,559 58,223 640,453

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

640,453 1,921,360 960,680 480,340 240,170 120,085 360,256 180,128 90,064 45,032 22,516 11,258 5,629 16,888 8,444 4,222 2,111 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.