3,694,173

3 × 7 × 43 × 4091

3,694,173 has digital root 6. The neighboring primes are 3694147 and 3694181; its proper-divisor sum differs from the starting integer by -1,626,810.

Prime Factor Structure

Factorization String 3 × 7 × 43 × 4091

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 5,761,536

Proper Divisor Sum 2,067,363

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #3694147 ← → #3694181

1 3 7 21 43 129 301 903 4,091 12,273 28,637 85,911 175,913 527,739 1,231,391 3,694,173

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

3,694,173 11,082,520 5,541,260 2,770,630 1,385,315 4,155,946 2,077,973 6,233,920 3,116,960 1,558,480 779,240 389,620 194,810 97,405 292,216 146,108 73,054 36,527 109,582 54,791 164,374 82,187 246,562 123,281 369,844 184,922 92,461 277,384 138,692 69,346 34,673 104,020 52,010 26,005 78,016 39,008 19,504 9,752 4,876 2,438 1,219 3,658 1,829 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320 1,160 580 290 145 436 218 109