Properties of the Number -66942

Sixty-Six Thousand Nine Hundred Forty-Two

Basics

Value: -66943 → -66942 → -66941

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 3719

Divisors: 1, 2, 3, 6, 9, 18, 3719, 7438, 11157, 22314

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10000010101111110

Octal: -202576

Duodecimal: -328A6

Hexadecimal: -1057e

Square: 4481231364

Square Root: 258.73152107928405

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 k such that k concatenated with k-6 gives the product of two numbers which differ by 5. A116118

Cube root of A061096(n). A67177

Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 3. A116143

Numbers k such that k concatenated with itself gives the product of two numbers which differ by 1. A116154

Numbers k such that there are 10 digits in k² and for each factor f of 10 (1, 2, 5) the sum of digit groupings of size f is a square. A153748

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8. A252608

a(n) is the largest nonnegative integer m such that m - π(m) >= π(m)^{1 + 1/n}. A334599

a(n) = [ a(n-1)/a(1) + a(n-2)/a(2) + ... + a(1)/a(n-1) ], for n >= 3. A22869