Properties of the Number 87777

Eighty-Seven Thousand Seven Hundred Seventy-Seven

Basics

Value: 87776 → 87777 → 87778

Parity: odd

Prime: No

Previous Prime: 87767

Next Prime: 87793

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 3251

Divisors: 1, 3, 9, 27, 3251, 9753, 29259, 87777

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011011100001

Octal: 253341

Duodecimal: 42969

Hexadecimal: 156e1

Square: 7704801729

Square Root: 296.2718346383942

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 n such that the result of n multiplied by the reversal of n can be split into two numbers a and b of equal length (if the length is odd a leading zero is allowed), where a + b equals n (b can also have a leading zero). A259316

a(1) = ... = a(4) = 1; a(n) = a(n - a(n-2)) + a(n - a(n-4)). A87777

Numbers k such that 8·10^k + 7·R_k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56724

Primes of the form 8·10^k + 7·R_k, where R_k is the repunit (A002275) of length k. A93943