Properties of the Number 9656

Nine Thousand Six Hundred Fifty-Six

Basics

Value: 9655 → 9656 → 9657

Parity: even

Prime: No

Previous Prime: 9649

Next Prime: 9661

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 17 × 71

Divisors: 1, 2, 4, 8, 17, 34, 68, 71, 136, 142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010110111000

Octal: 22670

Duodecimal: 5708

Hexadecimal: 25b8

Square: 93238336

Square Root: 98.26494797230598

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

Pairs (j, k) of numbers j<k such that φ(j) = φ(k), σ(j) = σ(k), d(j) = d(k). A134922

Numbers k whose abundance is 128: σ(k) - 2·k = 128. A292626

a(n) = n*(n + 1)*(n² - 3·n + 5)/6. A6484

Total number of parts in all partitions of n into prime parts. A84993

Numbers that occur only once in A155043; positions of zeros in A262505, ones in A262507. A262508

a(n) = A365339(10ⁿ). A365474

T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235239

Expansion of 1/sqrt(1-4x+8x²). A98335

Number of trees with n bicolored nodes and f nodes of the first color. Triangle T(n,f) read by rows, 0<=f<=n. A294783

T(n,k)=Number of nXk arrays of permutations of 0..n·k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7. A264794