3 × 5 × 7² × 13 × 67

Prime Factor Structure

Factorization String 3 × 5 × 7^2 × 13 × 67

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 1,302,336

Proper Divisor Sum 662,151

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #640163 ← → #640193

1 3 5 7 13 15 21 35 39 49 65 67 91 105 147 195 201 245 273 335 455 469 637 735 871 1,005 1,365 1,407 1,911 2,345 2,613 3,185 3,283 4,355 6,097 7,035 9,555 9,849 13,065 16,415 18,291 30,485 42,679 49,245 91,455 128,037 213,395 640,185

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

640,185 1,920,556 960,278 480,139 1,440,418 720,209 2,160,628 1,080,314 540,157 1,620,472 810,236 405,118 202,559 607,678 303,839 911,518 455,759 1,367,278 683,639 2,050,918 1,025,459 3,076,378 1,538,189 4,614,568 2,307,284 1,153,642 576,821 1,730,464 865,232 432,616 216,308 108,154 54,077 162,232 81,116 40,558 20,279 60,838 30,419 91,258 45,629 136,888 68,444 34,222 17,111 51,334 25,667 77,002 38,501 115,504 57,752 28,876 14,438 7,219 21,658 10,829 32,488 16,244 8,122 4,061

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