3 × 31 × 83²

Prime Factor Structure

Factorization String 3 × 31 × 83^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 892,544

Proper Divisor Sum 251,867

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #640669 ← → #640687

1 3 31 83 93 249 2,573 6,889 7,719 20,667 213,559 640,677

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

640,677 1,922,032 961,016 480,508 240,254 120,127 360,382 180,191 540,574 270,287 810,862 405,431 1,216,294 608,147 1,824,442 912,221 2,736,664 1,368,332 684,166 342,083 1,026,250 513,125 1,539,376 769,688 384,844 192,422 96,211 288,634 144,317 432,952 216,476 108,238 54,119 162,358 81,179 243,538 121,769 365,308 182,654 91,327 273,982 136,991 410,974 205,487 616,462 308,231 924,694 462,347 1,387,042 693,521 2,080,564 1,040,282 520,141 1,560,424 780,212 390,106 195,053 585,160 292,580 146,290

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