Properties of the Number 66542

Sixty-Six Thousand Five Hundred Forty-Two

Basics

Value: 66541 → 66542 → 66543

Parity: even

Prime: No

Previous Prime: 66541

Next Prime: 66553

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 7 ³ × 97

Divisors: 1, 2, 7, 14, 49, 97, 98, 194, 343, 679

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001111101110

Octal: 201756

Duodecimal: 32612

Hexadecimal: 103ee

Square: 4427837764

Square Root: 257.9573608176359

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 (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically. A256954

Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically. A256948

Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically. A256949

G.f. A(x) satisfies: [xⁿ] A(x)^2·n+1 / (x·A(x)²)' = 0 for n>1. A300627

Nonnegative integers all of whose anti-divisors are either 2 or odd. A66542