Properties of the Number 6819

Six Thousand Eight Hundred Nineteen

Basics

Value: 6818 → 6819 → 6820

Parity: odd

Prime: No

Previous Prime: 6803

Next Prime: 6823

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 2273

Divisors: 1, 3, 2273, 6819

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1101010100011

Octal: 15243

Duodecimal: 3B43

Hexadecimal: 1aa3

Square: 46498761

Square Root: 82.57723657279892

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

Numbers that are the sum of 7 positive 7th powers. A3374

Numbers that are the sum of 4 nonzero 8th powers. A3382

Sum of the eighth powers of the first n Fibonacci numbers. A128697

Expansion of 1/((1-x)²*(1-x²)²*(1-x³)). A97701

T(n,k)=Number of nXk 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal. A207228

Expansion of ∏_k>=1 (1 + x^k)^sigma₈(k). A301552

Partial sums of the sequence (A001097) of twin primes. A48598

Let M(n) = maximal value of (n/k)^k over all k = 1, 2, ...; a(n) = ceiling(M(n)). A139078

a(1) = 7 then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. A83994

Number of (w,x,y,z) with all terms in {1,...,n} and w·x>y·z+2. A212056