Properties of the Number 66606

Sixty-Six Thousand Six Hundred Six

Basics

Value: 66605 → 66606 → 66607

Parity: even

Prime: No

Previous Prime: 66601

Next Prime: 66617

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 17 × 653

Divisors: 1, 2, 3, 6, 17, 34, 51, 102, 653, 1306

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010000101110

Octal: 202056

Duodecimal: 32666

Hexadecimal: 1042e

Square: 4436359236

Square Root: 258.081382513346

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

Numbers whose set of base-10 digits is {0,6}. A204093

a(n) = n! mod Fibonacci(n). A182213

Smallest multiple of n using only digits 0 and 6. A78245

Numbers having four 6's in base 10. A43516

Number T(n,k) of involutions of [n] having exactly k peaks; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows. A303648

a(n) = A028321(n)/2. A51473

"BIJ" (reversible, indistinct, labeled) transform of 2,2,2,2... A32111

a(n) = 2ⁿ mod n². A66606

T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with all 2 X 2 subblock sums the same. A183986

Record values in A179066. A179105