Properties of the Number 64018

Sixty-Four Thousand Eighteen

Basics

Value: 64017 → 64018 → 64019

Parity: even

Prime: No

Previous Prime: 64013

Next Prime: 64019

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 32009

Divisors: 1, 2, 32009, 64018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111101000010010

Octal: 175022

Duodecimal: 3106A

Hexadecimal: fa12

Square: 4098304324

Square Root: 253.0177859360879

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 nXk 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself. A201729

Number of nX2 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself. A201723

Number of nX6 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself. A201727

a(n) = A002088(10ⁿ) = ∑_{k <= 10ⁿ} φ(k), sum of the Euler totients φ = A000010. A64018