Properties of the Number 69990

Sixty-Nine Thousand Nine Hundred Ninety

Basics

Value: 69989 → 69990 → 69991

Parity: even

Prime: No

Previous Prime: 69959

Next Prime: 69991

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 2333

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 2333, 4666

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10001000101100110

Octal: 210546

Duodecimal: 34606

Hexadecimal: 11166

Square: 4898600100

Square Root: 264.5562322078238

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

a(n) = 68·2ⁿ + 358. A305267

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,29. A64251

Smallest multiple of n whose sum of digits is greater than n. A269332

Revert transform of (1 + x - 4x² - x³)/(1 + 2x - 2x² - 2x³). A49141

a(n) = (-1)ⁿ⁺¹/5 * ∑_k=1..2n binomial(2n+1,k)*B(k)*5^k where B(k) are the Bernoulli numbers. A69990