Properties of the Number 71867

Seventy-One Thousand Eight Hundred Sixty-Seven

Basics

Value: 71866 → 71867 → 71868

Parity: odd

Prime: Yes

Previous Prime: 71861

Next Prime: 71879

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 71867

Divisors: 1, 71867

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100010111011

Octal: 214273

Duodecimal: 3570B

Hexadecimal: 118bb

Square: 5164865689

Square Root: 268.0802118769679

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

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4. A197090

Number of compositions of n with exactly two descents. A241627

Number of nX5 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4. A197087

Number of n X n 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4. A197084

Irregular triangle T(n,k) read by rows: T(n,k) is the number of compositions of n with k descents, n>=0, 0<=k<=floor(n/3). A238344

Maximum element in the continued fraction for prime(n+1)/prime(n). A71867