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Properties of the Number 8680

Eight Thousand Six Hundred Eighty

Basics

Value: 8679 → 8680 → 8681

Parity: even

Prime: No

Previous Prime: 8677

Next Prime: 8681

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 3 × 5 × 7 × 31

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10000111101000

Octal: 20750

Duodecimal: 5034

Hexadecimal: 21e8

Square: 75342400

Square Root: 93.16651759081692

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

Triangle read by rows: the Bell transform of the triple factorial numbers A008544 without column 0. A4747
T(n,k)=Number of length n+4 0..k arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two. A249001
Numbers k such that σ(x) = k has exactly 7 solutions. A60663
Numbers n such that σ(n) = 8*φ(n). A104901
Convolution triangle based on A001333(n), n >= 1. A54458
a(n) is the smallest number k larger than a(n-1) such that n·d(k)*sopf(k)=σ(k), where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472). A134382
Number of permutations on n points admitting a sixth root. A215717
Numbers whose base-6 representation is the juxtaposition of two identical strings. A20334
a(n) = 250·n - 70. A154361
Least common multiple of reversals of divisors of n in decimal representation. A188649