Number of the day: 86127

Properties of the number 86127:

86127 = 3 × 19 × 1511 is a sphenic number and squarefree.
86127 has 3 distinct prime factors, 8 divisors, 15 antidivisors and 54360 totatives.
86127 = 43064² - 43063² = 14356² - 14353² = 2276² - 2257² = 784² - 727² is the difference of 2 nonnegative squares in 4 ways.
86127 is the difference of 2 positive pentagonal numbers in 2 ways.
86127 is not the sum of 3 positive squares.
86127² is the sum of 3 positive squares.
86127 is a divisor of 977³⁰ - 1.
86127 is palindromic in (at least) the following bases: 45, 93, and -78.
86127 in base 21 = 9666 and consists of only the digits '6' and '9'.
86127 in base 45 = gNg and consists of only the digits 'N' and 'g'.

The number 86127 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A183629: Number of (n+1)X7 0..2 arrays with every 2x2 subblock summing to 4
A183631: Number of (n+1)X9 0..2 arrays with every 2x2 subblock summing to 4