1776 is nontrivially palindromic in base 7.
It is a congruent number.
1776 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
21776 is an apocalyptic number.
1776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1776 is a wasteful number, since it uses less digits than its factorization.
1776 is an evil number, because the sum of its binary digits is even.
The square root of 1776 is about 42.1426150114. The cubic root of 1776 is about 12.1100978930.
The spelling of 1776 in words is "one thousand, seven hundred seventy-six".