Properties of the Number 7655

Seven Thousand Six Hundred Fifty-Five

Basics

Value: 7654 → 7655 → 7656

Parity: odd

Prime: No

Previous Prime: 7649

Next Prime: 7669

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 1531

Divisors: 1, 5, 1531, 7655

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111100111

Octal: 16747

Duodecimal: 451B

Hexadecimal: 1de7

Square: 58599025

Square Root: 87.49285685128815

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

Dispersion of (3·n-1), read by antidiagonals. A191450

Square array A by downward antidiagonals: A(n,k) = (3 + 3ⁿ*(2·floor(3·k/2) - 1))/6, n,k >= 1; read as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ... A254051

T(n,k)=Number of nXk 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208637

a(n) = 4·n² + 6·n + 1. A82108

a(n) = (7·3ⁿ + 1)/2. A199109

a(n) = 2·a(n-1) + 5·a(n-2) for n > 1; a(0) = 1, a(1) = 5. A123011

Square array A(row,col) = A000265(A254051(row,col)). A254101

Numbers k such that k has nonincreasing digits and the k-th prime has nondecreasing digits. A116069

a(n) = n² - (n-1)² - (n-2)² - ... - 1². A179297

n written in fractional base 8/7. A24649