Properties of the Number 6465

Six Thousand Four Hundred Sixty-Five

Basics

Value: 6464 → 6465 → 6466

Parity: odd

Prime: No

Previous Prime: 6451

Next Prime: 6469

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 431

Divisors: 1, 3, 5, 15, 431, 1293, 2155, 6465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101000001

Octal: 14501

Duodecimal: 38A9

Hexadecimal: 1941

Square: 41796225

Square Root: 80.40522371090077

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

Number of integer partitions of n of whose permutations do not all have distinct runs. A351203

Partition the concatenation 1234567... of natural numbers into successive strings which are multiples of 3 all different and > 3. (0 never taken as the most significant digit.) A77296

Numbers k with exactly three distinct prime factors and such that cototient(k) is a square. A306670

a(n) = s(2·n) where s(0) = 0, s(1) = s(2) = 1, s(n) = abs(∑_k=2..n-1 (-1)^k * s(n-k) * s(k)). A72851

Partial sums of A072272. A253908

Pair up the numbers. A30656

a(n) = ∑_{d divides n} d·2^n-n/d. A80267

For any circular arrangement of 0..n-1, let S = sum of squares of every sum of two contiguous numbers; then a(n) = # of distinct values of S. A7773

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 211", based on the 5-celled von Neumann neighborhood. A270897

In the binary race of π, where the race leader changes. A278920