3 × 213361

Prime Factor Structure

Factorization String 3 × 213361

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 853,448

Proper Divisor Sum 213,365

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #640069 ← → #640099

1 3 213,361 640,083

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

640,083 1,920,250 960,125 2,880,376 1,440,188 720,094 360,047 1,080,142 540,071 1,620,214 810,107 2,430,322 1,215,161 3,645,484 1,822,742 911,371 2,734,114 1,367,057 4,101,172 2,050,586 1,025,293 3,075,880 1,537,940 768,970 384,485 1,153,456 576,728 288,364 144,182 72,091 216,274 108,137 324,412 162,206 81,103 243,310 121,655 364,966 182,483 547,450 273,725 821,176 410,588 205,294 102,647 307,942 153,971 461,914 230,957 692,872 346,436 173,218 86,609 259,828 129,914 64,957 194,872 97,436 48,718 24,359

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