Properties of the Number -2612

Six Hundred Twelve

Basics

Value: -2613 → -2612 → -2611

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 653

Divisors: 1, 2, 4, 653, 1306, 2612

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000110100

Octal: -5064

Duodecimal: -1618

Hexadecimal: -a34

Square: 6822544

Square Root: 51.10772935672255

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

Diagonal sums of the Riordan array (1-4·x+4·x², x*(1-2·x)) (A167431). A167434

Expansion of e.g.f. (2 - e^x)^-2. A5649

Snowflake (or E-toothpick) sequence (see Comments lines for definition). A161330

Expansion of 1/((1-x)²*(1-x²)*(1-x³)). A601

Expansion of 1/(1-x²-2·x³). A52947

Array read by antidiagonals: T(n,k) = number of barred preferential arrangements of k things with n bars (k >=0, n >= 0). A226513

Number T(n,k) of entries in the k-th cycles of all permutations of [n] when cycles are ordered by increasing lengths (and increasing smallest elements); triangle T(n,k), n>=1, 1<=k<=n, read by rows. A322383

BII-numbers of blobs. A326751

Positive integers n such that n¹² + 1 is semiprime. A105142

Rectangular array of coefficients in successive iterations of x·exp(x), as read by antidiagonals. A174480