Properties of the Number 70639

Seventy Thousand Six Hundred Thirty-Nine

Basics

Value: 70638 → 70639 → 70640

Parity: odd

Prime: Yes

Previous Prime: 70627

Next Prime: 70657

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 70639

Divisors: 1, 70639

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001001111101111

Octal: 211757

Duodecimal: 34A67

Hexadecimal: 113ef

Square: 4989868321

Square Root: 265.7799841974561

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) = smallest prime p_k such that the n successive differences between the primes p_k through p_k+n are all distinct. A79007

Primes p such that 2^p-1 and the p-th Fibonacci number have a common factor. Prime terms of A074776. A80050

Primes indexed by A078515; i.e., primes which start record runs of consecutive primes with distinct first differences. A79889

a(n) = 840·n² - 23100·n + 86861. A216257

Primes p that set a new record for the size of the smallest b > 1 such that b^p-1 == 1 (mod p²). A287147

Emirps p such that if q is the next emirp after p, 2·q-p is also an emirp. A350852

Primes such that the next 10 prime gaps are all distinct. A372550

a(n) = (1/φ(n))*∑_k=1..n φ(n·k). A70639