2² × 3² × 29 × 613

Prime Factor Structure

Factorization String 2^2 × 3^2 × 29 × 613

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 1,676,220

Proper Divisor Sum 1,036,248

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #639959 ← → #639983

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

639,972 319,986 159,993 479,980 239,990 119,995 359,986 179,993 539,980 269,990 134,995 404,986 202,493 607,480 303,740 151,870 75,935 227,806 113,903 341,710 170,855 512,566 256,283 768,850 384,425 1,153,276 576,638 288,319 864,958 432,479 1,297,438 648,719 1,946,158 973,079 2,919,238 1,459,619 4,378,858 2,189,429 6,568,288 3,284,144 1,642,072 821,036 410,518 205,259 615,778 307,889 923,668 461,834 230,917 692,752 346,376 173,188 86,594 43,297 129,892 64,946 32,473 97,420 48,710 24,355

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