661 × 977

Prime Factor Structure

Factorization String 661 × 977

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 647,436

Proper Divisor Sum 1,639

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #645787 ← → #645803

1 661 977 645,797

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

645,797 1,937,392 968,696 484,348 242,174 121,087 363,262 181,631 544,894 272,447 817,342 408,671 1,226,014 613,007 1,839,022 919,511 2,758,534 1,379,267 4,137,802 2,068,901 6,206,704 3,103,352 1,551,676 775,838 387,919 1,163,758 581,879 1,745,638 872,819 2,618,458 1,309,229 3,927,688 1,963,844 981,922 490,961 1,472,884 736,442 368,221 1,104,664 552,332 276,166 138,083 414,250 207,125 621,376 310,688 155,344 77,672 38,836 19,418 9,709 29,128 14,564 7,282 3,641 10,924 5,462 2,731 8,194 4,097

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