Properties of the Number 7770

Seven Thousand Seven Hundred Seventy

Basics

Value: 7769 → 7770 → 7771

Parity: even

Prime: No

Previous Prime: 7759

Next Prime: 7789

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 37

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: 1111001011010

Octal: 17132

Duodecimal: 45B6

Hexadecimal: 1e5a

Square: 60372900

Square Root: 88.14760348415605

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

Tetrahedral (or triangular pyramidal) numbers: a(n) = C(n+2,3) = n*(n+1)*(n+2)/6. A292

Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n. A8277

Triangle of Stirling numbers of 2nd kind, S(n,k), n >= 0, 0 <= k <= n. A48993

a(n) = 1² + 3² + 5² + 7² + ... + (2·n-1)² = n*(4·n² - 1)/3. A447

Triangle read by rows, the Bell transform of the quartic factorial numbers A007696(n+1) without column 0. A49029

Products of exactly 5 distinct primes. A46387

Stirling numbers of the second kind, S(n,4). A453

Numbers k such that k² divides 11^k - 1. A127092

Table T(n,k) by antidiagonals. T(n,k) is the number of length n primitive (=aperiodic or period n) k-ary words (n,k >= 1). A143324

Numbers that are divisible by exactly 5 different primes. A51270