1,637,643

3 × 7 × 77983

1,637,643 factors as 3 × 7 × 77983. Its 8 positive divisors give a proper-divisor sum of 857,845, so this integer is deficient. The Collatz stopping time is 70 steps.

Prime Factor Structure

Factorization String 3 × 7 × 77983

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,495,488

Proper Divisor Sum 857,845

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1637641 ← → #1637677

Radix Representation

Decimal	1637643
Binary	110001111110100001011 (21 bits)
Octal	0o6176413
Hexadecimal	0x18FD0B

Divisor Catalog (8)

1 3 7 21 77,983 233,949 545,881 1,637,643

Collatz Trajectory (70 steps to reach 1)

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

1,637,643 4,912,930 2,456,465 7,369,396 3,684,698 1,842,349 5,527,048 2,763,524 1,381,762 690,881 2,072,644 1,036,322 518,161 1,554,484 777,242 388,621 1,165,864 582,932 291,466 145,733 437,200 218,600 109,300 54,650 27,325 81,976 40,988 20,494 10,247 30,742 15,371 46,114 23,057 69,172 34,586 17,293 51,880 25,940 12,970 6,485 19,456 9,728 4,864 2,432 1,216 608 304 152 76 38 19 58 29 88 44 22 11 34 17 52

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