Properties of the Number 6650

Six Thousand Six Hundred Fifty

Basics

Value: 6649 → 6650 → 6651

Parity: even

Prime: No

Previous Prime: 6637

Next Prime: 6653

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 ² × 7 × 19

Divisors: 1, 2, 5, 7, 10, 14, 19, 25, 35, 38

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111111010

Octal: 14772

Duodecimal: 3A22

Hexadecimal: 19fa

Square: 44222500

Square Root: 81.54753215150045

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 m such that there are precisely 20 groups of order m. A298911

a(n) = n*(11·n-5)/2. A226492

Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = ψ(n) - n and ψ(n) = A001615(n) is the Dedekind ψ function. A323329

Coefficients of the '6th-order' mock θ function ρ(q). A53270

Stirling2 triangle with scaled diagonals (powers of 5). A75500

T(n,k)=1/8 the number of (n+1)X(k+1) 0..3 arrays with all 2X2 subblock sums the same. A184029

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 0 vertically. A208287

Number of partitions of n having no parts with multiplicity 10. A184645

-10-Knödel numbers. A225514

Almost practical numbers. A174533