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Properties of the Number 87869

Eighty-Seven Thousand Eight Hundred Sixty-Nine

Basics

Value: 87868 → 87869 → 87870

Parity: odd

Prime: Yes

Previous Prime: 87853

Next Prime: 87877

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 87869

Divisors: 1, 87869

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101011100111101

Octal: 253475

Duodecimal: 42A25

Hexadecimal: 1573d

Square: 7720961161

Square Root: 296.42705679475347

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

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..2 introduced in row major order. A204511
Primes with digit sum = 38. A106772
Record values in A061026, the smallest number m such that n divides φ(m), where φ is Euler's totient function. A233517
Records in A034694. A120856
Records in A066674. A125879
The primes associated with A239800 (1 if A239800(n) = 0). A342365
Number of (n+2)X3 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..2 introduced in row major order. A204506
Number of (n+2)X5 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..2 introduced in row major order. A204508
Fourth term of strong prime sextets: p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1). A54816
Number of nX7 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) (0,-1) or (-1,0) and new values introduced in order 0..2. A274802