Properties of the Number 85639

Eighty-Five Thousand Six Hundred Thirty-Nine

Basics

Value: 85638 → 85639 → 85640

Parity: odd

Prime: Yes

Previous Prime: 85627

Next Prime: 85643

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 85639

Divisors: 1, 85639

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100111010000111

Octal: 247207

Duodecimal: 41687

Hexadecimal: 14e87

Square: 7334038321

Square Root: 292.64141880465246

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

T(n,k) is the number of n X n nonnegative integer matrices with row and column i=1..n having sum <= i·k. A214011

Maximal term of TRIP-Stern sequence of level n corresponding to permutation triple (e,13,23). A271486

Number of 3X3 nonnegative integer matrices with row and column i=1..3 having sum <= i·n. A214012

a(n) is the numerator of ∑_{primes p < n} 1/(n-p). A305700

Primes k such that the concatenation of (b, k, b) and (k, b, k) are both prime, where b is the binary representation of k. A389801

Number of n X n nonnegative integer matrices with row and column i=1..n having sum <= i·3. A214007

Ramanujan sum c_n(5). A85639