Properties of the Number 66494

Sixty-Six Thousand Four Hundred Ninety-Four

Basics

Value: 66493 → 66494 → 66495

Parity: even

Prime: No

Previous Prime: 66491

Next Prime: 66499

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 33247

Divisors: 1, 2, 33247, 66494

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001110111110

Octal: 201676

Duodecimal: 32592

Hexadecimal: 103be

Square: 4421452036

Square Root: 257.864305401116

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

T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order. A222649

Expansion of 1/G(1) where G(k) = 1 - (q*(1+q))^k / G(k+1). A238436

Diagonal sums of correlation triangle for Catalan numbers. A115254

Number of nX3 0..2 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order. A222644

a(n)=1+(1/12)(n*(n+1)*(n+3)*(4-n)). A80260

Semiprimes with only semiprime digits, each appearing at least once. A349275

Number of non-equivalent ways to place 5 non-attacking kings on an n X n board. A279114

Number of ways to place 6 nonattacking wazirs on an n X n board. A178409

Numbers n such that prime(n+1) - prime(n) = φ(n). A66494