It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37651 = 23 ⋅1637.
It is a cyclic number.
15673 is a lucky number.
It is a plaindrome in base 9 and base 15.
215673 is an apocalyptic number.
It is an amenable number.
15673 is an equidigital number, since it uses as much as digits as its factorization.
15673 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2246.
The square root of 15673 is about 125.1918527701. The cubic root of 15673 is about 25.0255738302.
Subtracting from 15673 its sum of digits (22), we obtain a palindrome (15651).
The spelling of 15673 in words is "fifteen thousand, six hundred seventy-three".