Number of the day: 99598

Properties of the number 99598:

99598 = 2 × 19 × 2621 is a sphenic number and squarefree.
99598 has 3 distinct prime factors, 8 divisors, 9 antidivisors and 47160 totatives.
Reversing the decimal digits of 99598 results in a prime.
99598 is the sum of 2 positive triangular numbers.
99598 is the difference of 2 positive pentagonal numbers in 4 ways.
99598 = 7² + 18² + 315² is the sum of 3 positive squares.
99598² = 41800² + 90402² is the sum of 2 positive squares in 1 way.
99598² is the sum of 3 positive squares.
99598 is a proper divisor of 761¹⁰ - 1.
99598 = '9' + '9598' is the concatenation of 2 semiprime numbers.
99598 is palindromic in (at least) base -62.
99598 in base 61 = Qkk and consists of only the digits 'Q' and 'k'.

The number 99598 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A137741: Number of different strings of length n+4 obtained from "123...n" by iteratively duplicating any substring.