2² × 13² × 977

Prime Factor Structure

Factorization String 2^2 × 13^2 × 977

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 1,252,818

Proper Divisor Sum 592,366

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #660449 ← → #660493

1 2 4 13 26 52 169 338 676 977 1,954 3,908 12,701 25,402 50,804 165,113 330,226 660,452

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

660,452 330,226 165,113 495,340 247,670 123,835 371,506 185,753 557,260 278,630 139,315 417,946 208,973 626,920 313,460 156,730 78,365 235,096 117,548 58,774 29,387 88,162 44,081 132,244 66,122 33,061 99,184 49,592 24,796 12,398 6,199 18,598 9,299 27,898 13,949 41,848 20,924 10,462 5,231 15,694 7,847 23,542 11,771 35,314 17,657 52,972 26,486 13,243 39,730 19,865 59,596 29,798 14,899 44,698 22,349 67,048 33,524 16,762 8,381 25,144

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