Properties of the Number 66499

Sixty-Six Thousand Four Hundred Ninety-Nine

Basics

Value: 66498 → 66499 → 66500

Parity: odd

Prime: Yes

Previous Prime: 66491

Next Prime: 66509

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 66499

Divisors: 1, 66499

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001111000011

Octal: 201703

Duodecimal: 32597

Hexadecimal: 103c3

Square: 4422117001

Square Root: 257.8740002404275

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

Let f(n) = exp(π*sqrt(n)); sequence gives numbers n such that f(n) - floor(f(n)) < 1/10⁴. A127029

Primes having only {4, 6, 9} as digits. A107666

T(n,k)=Number of nXk 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. A231523

Number of compositions (ordered partitions) of n into distinct parts >= 4. A339102

Numerators of continued fraction convergents to sqrt(207). A41384

Numerators of continued fraction convergents to sqrt(828). A42598

Number of n X 4 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. A231519

Number of 5Xn 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. A231527

Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes counting as distinct different formations of transparent squares. A381057

Numbers k such that φ(k) == 2 (mod 4). A66499