Properties of the Number 3665

Three Thousand Six Hundred Sixty-Five

Basics

Value: 3664 → 3665 → 3666

Parity: odd

Prime: No

Previous Prime: 3659

Next Prime: 3671

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 733

Divisors: 1, 5, 733, 3665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111001010001

Octal: 7121

Duodecimal: 2155

Hexadecimal: e51

Square: 13432225

Square Root: 60.53924347066124

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

Numbers k such that 5·6^k - 1 is prime. A79906

Number of integer partitions of n that cannot be partitioned into constant multisets with a common sum. A381993

Odd interprimes not divisible by 3. A72573

Rounded total surface area of a regular tetrahedron with edge length n. A70169

Greatest integer k such that k/n² < sqrt(3). A171972

a(n) = ∑_k=1..n ∑_d=1..k (k mod d). A72481

Irregular triangle read by rows, in which row n lists the Münchhausen numbers in base n, for 2 <= n. A166623

Numbers k such that σ(φ(σ(k))) = φ(σ(φ(k))). A67160

Composite de Polignac numbers (A006285). A98237

G.f.: exp( ∑_n>=1 A163659(n²)*xⁿ/n ), where x·exp(∑_n>=1 A163659(n)*xⁿ/n) = S(x) is the g.f. of Stern's diatomic series (A002487). A195586