Properties of the Number 6622

Six Thousand Six Hundred Twenty-Two

Basics

Value: 6621 → 6622 → 6623

Parity: even

Prime: No

Previous Prime: 6619

Next Prime: 6637

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 11 × 43

Divisors: 1, 2, 7, 11, 14, 22, 43, 77, 86, 154

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111011110

Octal: 14736

Duodecimal: 39BA

Hexadecimal: 19de

Square: 43850884

Square Root: 81.37567204023571

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

a(n) = n*(n+1)*(2·n+1)/3. A6331

Expansion of (1+x²)/((1-x)²*(1-x²)²). A5993

7 times triangular numbers: 7·n*(n+1)/2. A24966

a(n) = 1*(n) + 2*(n-1) + 3*(n-2) + ... + (n+1-k)*k, where k = floor((n+1)/2). A23855

A(n,k) is the n-th Rhonda number to base A002808(k), the k-th composite number; square array A(n,k), n>=1, k>=1, read by antidiagonals. A291925

Integers that are Rhonda numbers to base 8. A100970

7 times hexagonal numbers: a(n) = 7·n*(2·n-1). A195320

a(n) = 1*(n+1-1) + 2*(n+1-2) + ... + k*(n+1-k), where k = floor((n+1)/2). A23856

a(n) = T(2n, n-2), T given by A026758. A26761

Positive numbers whose product of digits is 9 times their sum. A62041