Properties of the Number -1697

Six Hundred Ninety-Seven

Basics

Value: -1698 → -1697 → -1696

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 1697

Divisors: 1, 1697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11010100001

Octal: -3241

Duodecimal: -B95

Hexadecimal: -6a1

Square: 2879809

Square Root: 41.19465984809196

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

Expansion of -(1+x+3·x²+x³)/((x²+4·x+1)*(x²-2·x-1)). A111641

a(n) = ∑_k=1..n (-1)^k-1 * binomial(k+2,3) * floor(n/k). A366938

Matrix inverse of triangle A101275 (number of Schröder paths). A102051

Diagonal sums of Riordan array (1-x-x²,x(1-x)). A109266

Expansion of (x - 1)/(1 - x² + x³ + x⁴ - x⁵). A115413

Primes whose base-2 representation is also the base-3 representation of a prime. A235266

Expansion of g.f. (1-sqrt(1-4·x-4·x²))/(2*(1+x)). A52709

Friedlander-Iwaniec primes: Primes of form a² + b⁴. A28916

The slowest increasing sequence of primes such that difference of successive terms is unique. A84758

Primes of the form 30n - 13. A39949