Properties of the Number -2465

Four Hundred Sixty-Five

Basics

Value: -2466 → -2465 → -2464

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 17 × 29

Divisors: 1, 5, 17, 29, 85, 145, 493, 2465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110100001

Octal: -4641

Duodecimal: -1515

Hexadecimal: -9a1

Square: 6076225

Square Root: 49.64876634922564

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

E.g.f. S(x,y) = Integral C(x,y)*C(y,x) dx such that C(x,y)² + S(x,y)² = 1 and C(y,x) = 1 - Integral S(y,x)*C(x,y) dy, as a triangle of coefficients T(n,k) read by rows. A367380

Values of n such that L(14) and N(14) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227517

Alternating sum of 11-gonal (or hendecagonal) numbers. A266087

Fermat pseudoprimes to base 2, also called Sarrus numbers or Poulet numbers. A1567

Carmichael numbers: composite numbers k such that a^k-1 == 1 (mod k) for every a coprime to k. A2997

Octagonal numbers: n*(3·n-2). Also called star numbers. A567

a(n) = n*(n² + 1)/2. A6003

3-Carmichael numbers: Carmichael numbers equal to the product of 3 primes: k = p·q*r, where p < q < r are primes such that a^k-1 == 1 (mod k) if a is prime to k. A87788

Rhombic dodecahedral numbers: a(n) = n⁴ - (n - 1)⁴. A5917

Second differences of partition numbers A000041. A53445