Properties of the Number -7663

Six Hundred Sixty-Three

Basics

Value: -7664 → -7663 → -7662

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 79 × 97

Divisors: 1, 79, 97, 7663

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1110111101111

Octal: -16757

Duodecimal: -4527

Hexadecimal: -1def

Square: 58721569

Square Root: 87.53856293085921

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

Composite and every divisor (except 1) contains the digit 7. A62676

Consider all permutations p_i of the first n primes; a(n) is the minimum over p_i of the maximal product of two adjacent primes in the permutation. A332765

Greatest semiprime whose prime indices sum to n. A339115

Triangle read by rows: T(n,m) (n >= m >= 1) = number of vertices formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares. A331453

a(n) = ∑_{k=0,1,2,...,n-4,n-2,n-1} a(k); a(n-3) is not a summand, with a(0)=a(1)=a(2)=1. A49864

Semiprimes whose prime factors are distinct and the reversal of one factor is equal to the other. A83815

Product of n-th prime and n-th prime written backwards. A133019

a(n) = prime(n)*prime(n+3). A90090

Sequence of pairwise relatively prime numbers of class P₇ (see comment in A275246). A275252

The number of seconds after midnight corresponding to prime time primes, i.e., primes of the form HMMSS with primes H < 24 and MM, SS < 60, cf. A295013. A295003