Properties of the Number 71661

Seventy-One Thousand Six Hundred Sixty-One

Basics

Value: 71660 → 71661 → 71662

Parity: odd

Prime: No

Previous Prime: 71647

Next Prime: 71663

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 23887

Divisors: 1, 3, 23887, 71661

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001011111101101

Octal: 213755

Duodecimal: 35579

Hexadecimal: 117ed

Square: 5135298921

Square Root: 267.69572278988693

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Records in A104883. A104884

Number of distinct lines passing through at least two points in a triangular grid of side n. A244504

Permutation A057505 applied twice ("squared"). A71661