The square root of 1764 is 42.
1764 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.
It is a nude number because it is divisible by every one of its digits.
It is a plaindrome in base 8.
It is a nialpdrome in base 7 and base 14.
It is a zygodrome in base 8.
It is an unprimeable number.
1764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
1764 is the 42-nd square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1764
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1764 is a wasteful number, since it uses less digits than its factorization.
1764 is an evil number, because the sum of its binary digits is even.
The cubic root of 1764 is about 12.0827612360.
Subtracting from 1764 its product of digits (168), we obtain a triangular number (1596 = T56).
The spelling of 1764 in words is "one thousand, seven hundred sixty-four".