613406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
613406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2613406 is an apocalyptic number.
613406 is a wasteful number, since it uses less digits than its factorization.
613406 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 306705.
The square root of 613406 is about 783.2024004049. The cubic root of 613406 is about 84.9668151890.
The spelling of 613406 in words is "six hundred thirteen thousand, four hundred six".