Properties of the Number 1677

One Thousand Six Hundred Seventy-Seven

Basics

Value: 1676 → 1677 → 1678

Parity: odd

Prime: No

Previous Prime: 1669

Next Prime: 1693

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 43

Divisors: 1, 3, 13, 39, 43, 129, 559, 1677

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010001101

Octal: 3215

Duodecimal: B79

Hexadecimal: 68d

Square: 2812329

Square Root: 40.95119045888654

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

Number of inseparable partitions of n; see Comments. A325535

a(n) = n² - 4. A28347

Numerator of 1/4 - 1/n². A61037

Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed). A23108

Coordination sequence for "pcu-i" 3D uniform tiling. A299277

Numbers > 1000 such that all the substrings of length = 3 are primes (substrings with leading '0' are considered to be nonprime). A211684

Number of partitions of n with distinct parts p(i) such that if i ≠ j, then |p(i) - p(j)| >= 3. A25157

Numbers that can be expressed as the difference of the squares of primes in just one distinct way. A90781

Triangle T(n,k), 0 <= k <= n, read by rows given by: T(0,0)=1, T(n,k)=0 if k < 0 or if k > n, T(n,0) = T(n-1,1), T(n,k) = T(n-1,k-1) + 3·T(n-1,k) + T(n-1,k+1) for k >= 1. A126970

a(n) = n*(5·n - 1)/2. A5476