660,998

2 × 13 × 25423

660,998 factors as 2 × 13 × 25423. Its 8 positive divisors give a proper-divisor sum of 406,810, so this integer is deficient. The Collatz stopping time is 141 steps.

Prime Factor Structure

Factorization String 2 × 13 × 25423

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,067,808

Proper Divisor Sum 406,810

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #660983 ← → #661009

Radix Representation

Decimal	660998
Binary	10100001011000000110 (20 bits)
Octal	0o2413006
Hexadecimal	0xA1606

Divisor Catalog (8)

1 2 13 26 25,423 50,846 330,499 660,998

Collatz Trajectory (141 steps to reach 1)

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

660,998 330,499 991,498 495,749 1,487,248 743,624 371,812 185,906 92,953 278,860 139,430 69,715 209,146 104,573 313,720 156,860 78,430 39,215 117,646 58,823 176,470 88,235 264,706 132,353 397,060 198,530 99,265 297,796 148,898 74,449 223,348 111,674 55,837 167,512 83,756 41,878 20,939 62,818 31,409 94,228 47,114 23,557 70,672 35,336 17,668 8,834 4,417 13,252 6,626 3,313 9,940 4,970 2,485 7,456 3,728 1,864 932 466 233 700

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