5² × 11 × 17 × 137

Prime Factor Structure

Factorization String 5^2 × 11 × 17 × 137

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 924,048

Proper Divisor Sum 283,573

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #640463 ← → #640477

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

640,475 1,921,426 960,713 2,882,140 1,441,070 720,535 2,161,606 1,080,803 3,242,410 1,621,205 4,863,616 2,431,808 1,215,904 607,952 303,976 151,988 75,994 37,997 113,992 56,996 28,498 14,249 42,748 21,374 10,687 32,062 16,031 48,094 24,047 72,142 36,071 108,214 54,107 162,322 81,161 243,484 121,742 60,871 182,614 91,307 273,922 136,961 410,884 205,442 102,721 308,164 154,082 77,041 231,124 115,562 57,781 173,344 86,672 43,336 21,668 10,834 5,417 16,252 8,126 4,063

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