Properties of the Number 9646

Nine Thousand Six Hundred Forty-Six

Basics

Value: 9645 → 9646 → 9647

Parity: even

Prime: No

Previous Prime: 9643

Next Prime: 9649

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 13 × 53

Divisors: 1, 2, 7, 13, 14, 26, 53, 91, 106, 182

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010110101110

Octal: 22656

Duodecimal: 56BA

Hexadecimal: 25ae

Square: 93045316

Square Root: 98.21405194777374

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 T(n,m) = ∑_k=0..m Catalan(n-k)*Catalan(k). A28364

Growth series for affine Coxeter group B₄. A267167

Catalan triangle A028364 with row reversion. A67323

Triangle read by rows: T(n,k) gives number of ways of arranging n chords on a circle with k simple intersections (i.e., no intersections with 3 or more chords) - positive values only. A67311

4-almost primes with semiprime digits (digits 4, 6, 9 only). A111496

Number of partitions of n having an ordering of parts in which no parts of equal parity are adjacent and the first and last terms have the same parity. A239833

4-dimensional analog of centered polygonal numbers. A6323

Position of first occurrence of n in the continued fraction for the Laplace's limit constant. A33261

Values of r such that N(r)/r² > π, where N(r) is the number of integer lattice points (x,y) inside or on a circle of radius r. A93832

a(n) = 7·n*(2·n + 1). A195026