It is a happy number.
1670 is nontrivially palindromic in base 16.
1670 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
1670 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between odd and even.
1670 is an undulating number in base 16.
1670 is strictly pandigital in base 5.
It is a plaindrome in base 9 and base 11.
It is a nialpdrome in base 12, base 14 and base 15.
It is a zygodrome in base 9.
It is a congruent number.
It is an unprimeable number.
21670 is an apocalyptic number.
1670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1670 is a wasteful number, since it uses less digits than its factorization.
1670 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 174.
The square root of 1670 is about 40.8656334834. The cubic root of 1670 is about 11.8642099587.
Subtracting from 1670 its reverse (761), we obtain a palindrome (909).
The spelling of 1670 in words is "one thousand, six hundred seventy".