Properties of the Number 1977

One Thousand Nine Hundred Seventy-Seven

Basics

Value: 1976 → 1977 → 1978

Parity: odd

Prime: No

Previous Prime: 1973

Next Prime: 1979

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 659

Divisors: 1, 3, 659, 1977

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11110111001

Octal: 3671

Duodecimal: 1189

Hexadecimal: 7b9

Square: 3908529

Square Root: 44.46346815083142

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 > 1000 such that all the substrings of length = 3 are primes (substrings with leading '0' are considered to be nonprime). A211684

Number of partitions of n with distinct parts p(i) such that if i ≠ j, then |p(i) - p(j)| >= 3. A25157

First spoke of a hexagonal spiral. A56105

Number of non-isomorphic multiset partitions of weight n with no singletons. A302545

a(n) = n² + 3·n - 1. A14209

Values of n such that L(11) and N(11) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227449

Toothpick sequence on the hexagonal net starting from a node. A182632

Least k such that there are exactly n multisets that can be obtained by choosing a divisor of each prime index of k. A355734

T(n,k) = Number of n X k 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1s. A297595

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302528