647 × 661

Prime Factor Structure

Factorization String 647 × 661

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 428,976

Proper Divisor Sum 1,309

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #427621 ← → #427681

1 647 661 427,667

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

427,667 1,283,002 641,501 1,924,504 962,252 481,126 240,563 721,690 360,845 1,082,536 541,268 270,634 135,317 405,952 202,976 101,488 50,744 25,372 12,686 6,343 19,030 9,515 28,546 14,273 42,820 21,410 10,705 32,116 16,058 8,029 24,088 12,044 6,022 3,011 9,034 4,517 13,552 6,776 3,388 1,694 847 2,542 1,271 3,814 1,907 5,722 2,861 8,584 4,292 2,146 1,073 3,220 1,610 805 2,416 1,208 604 302 151 454

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