Properties of the Number 66412

Sixty-Six Thousand Four Hundred Twelve

Basics

Value: 66411 → 66412 → 66413

Parity: even

Prime: No

Previous Prime: 66403

Next Prime: 66413

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 16603

Divisors: 1, 2, 4, 16603, 33206, 66412

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001101101100

Octal: 201554

Duodecimal: 32524

Hexadecimal: 1036c

Square: 4410553744

Square Root: 257.70525799835747

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..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element. A283203

Number of n X 3 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element. A283198

Number of nX6 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element. A283201

Positive numbers whose square starts and ends with exactly 44, and no 444. A348831

Number of elements in the set phi_inverse(φ(n)). A66412

Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than five. A287584