5² × 31 × 827

Prime Factor Structure

Factorization String 5^2 × 31 × 827

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 821,376

Proper Divisor Sum 180,451

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #640919 ← → #640933

1 5 25 31 155 775 827 4,135 20,675 25,637 128,185 640,925

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

640,925 1,922,776 961,388 480,694 240,347 721,042 360,521 1,081,564 540,782 270,391 811,174 405,587 1,216,762 608,381 1,825,144 912,572 456,286 228,143 684,430 342,215 1,026,646 513,323 1,539,970 769,985 2,309,956 1,154,978 577,489 1,732,468 866,234 433,117 1,299,352 649,676 324,838 162,419 487,258 243,629 730,888 365,444 182,722 91,361 274,084 137,042 68,521 205,564 102,782 51,391 154,174 77,087 231,262 115,631 346,894 173,447 520,342 260,171 780,514 390,257 1,170,772 585,386 292,693 878,080

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