λ
Sigma Notebook

1,678,657

1678657
Deficient Odd Prime

1,678,657 is odd and not a perfect square. Its factorization is 1678657 and its 2 divisors sum to 1,678,658.

Prime Factor Structure

Factorization String 1678657
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 1,678,658
Proper Divisor Sum 1
Digit Sum / Digital Root 40 (Root: 4)
Adjacent Primes #1678639 ← → #1678673

Radix Representation

Decimal 1678657
Binary 110011001110101000001 (21 bits)
Octal 0o6316501
Hexadecimal 0x199D41

Divisor Catalog (2)

Collatz Trajectory (57 steps to reach 1)

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

1,678,657 5,035,972 2,517,986 1,258,993 3,776,980 1,888,490 944,245 2,832,736 1,416,368 708,184 354,092 177,046 88,523 265,570 132,785 398,356 199,178 99,589 298,768 149,384 74,692 37,346 18,673 56,020 28,010 14,005 42,016 21,008 10,504 5,252 2,626 1,313 3,940 1,970 985 2,956 1,478 739 2,218 1,109 3,328 1,664 832 416 208 104 52 26 13 40 20 10 5 16 8 4 2 1

More profiles

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