Properties of the Number -2636

Six Hundred Thirty-Six

Basics

Value: -2637 → -2636 → -2635

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 659

Divisors: 1, 2, 4, 659, 1318, 2636

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101001001100

Octal: -5114

Duodecimal: -1638

Hexadecimal: -a4c

Square: 6948496

Square Root: 51.34199061197374

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

Expansion of ψ(x) / φ(x) in powers of·where φ(), ψ() are Ramanujan θ functions. A83365

Numbers whose square is a palindrome. A2778

Number of partitions with no even part repeated; partitions of n in which no parts are multiples of 4. A1935

Fundamental discriminants of real quadratic number fields with class number 3. A94612

Sum of the sizes of the Durfee squares of all partitions of n. A115995

Least k for the Theodorus spiral to complete n revolutions. A72895

G.f. satisfies A(x) = (1 + x·A(x)²) * (1 + x²*A(x)⁶). A200718

Numbers k such that lcm(1,2,3,...,k)/5 equals the denominator of the k-th harmonic number H(k). A112814

Smaller of two consecutive numbers of the form p²*q where p and q are distinct primes. A74172

Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 4, all different and > 4. (0 never taken as the most significant digit.) A77297