It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is an unprimeable number.
261446 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2261446 is an apocalyptic number.
261446 is a wasteful number, since it uses less digits than its factorization.
261446 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2206.
The square root of 261446 is about 511.3179050258. The cubic root of 261446 is about 63.9431461239.
The spelling of 261446 in words is "two hundred sixty-one thousand, four hundred forty-six".