2⁴ × 61 × 661

Prime Factor Structure

Factorization String 2^4 × 61 × 661

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 1,272,364

Proper Divisor Sum 627,228

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #645131 ← → #645137

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

645,136 322,568 161,284 80,642 40,321 120,964 60,482 30,241 90,724 45,362 22,681 68,044 34,022 17,011 51,034 25,517 76,552 38,276 19,138 9,569 28,708 14,354 7,177 21,532 10,766 5,383 16,150 8,075 24,226 12,113 36,340 18,170 9,085 27,256 13,628 6,814 3,407 10,222 5,111 15,334 7,667 23,002 11,501 34,504 17,252 8,626 4,313 12,940 6,470 3,235 9,706 4,853 14,560 7,280 3,640 1,820 910 455 1,366 683

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