Properties of the Number -654481

Six Hundred Fifty-Four Thousand Four Hundred Eighty-One

Basics

Value: -654482 → -654481 → -654480

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 809 ²

Divisors: 1, 809, 654481

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10011111110010010001

Octal: -2376221

Duodecimal: -276901

Hexadecimal: -9fc91

Square: 428345379361

Square Root: 809

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

Squares of lesser of twin primes. A108570

Numbers k such that the sum of the cubes of divisors of k is a prime. A63783

Prime powers (A025475) such that the distance to the nearest prime power is a triangular number (A000217). A239520

Perfect powers k such that A052409(k) is equal to A052409(A366275(k)). A366278

Numbers that decrease two times in succession when they are iteratively replaced by the "Look and Say" description (cf. A045918) of their prime factors, counted with multiplicity. A379455

A104315(n)². A104316

Number of n X 4 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically. A207399

Squares s such that s + 1234567890 is prime. A241538

Perfect powers m^k such that m, k and m+k are primes. A258400