3² × 5 × 7² × 313

Prime Factor Structure

Factorization String 3^2 × 5 × 7^2 × 313

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 1,396,044

Proper Divisor Sum 705,879

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #690163 ← → #690187

1 3 5 7 9 15 21 35 45 49 63 105 147 245 313 315 441 735 939 1,565 2,191 2,205 2,817 4,695 6,573 10,955 14,085 15,337 19,719 32,865 46,011 76,685 98,595 138,033 230,055 690,165

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

690,165 2,070,496 1,035,248 517,624 258,812 129,406 64,703 194,110 97,055 291,166 145,583 436,750 218,375 655,126 327,563 982,690 491,345 1,474,036 737,018 368,509 1,105,528 552,764 276,382 138,191 414,574 207,287 621,862 310,931 932,794 466,397 1,399,192 699,596 349,798 174,899 524,698 262,349 787,048 393,524 196,762 98,381 295,144 147,572 73,786 36,893 110,680 55,340 27,670 13,835 41,506 20,753 62,260 31,130 15,565 46,696 23,348 11,674 5,837 17,512 8,756 4,378

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