3646
3646 is a natural number that follows 3645 and precedes 3647. In base-10 it is even and composite, with prime factorization 2 × 1823; since 1823 is prime, 3646 is a semiprime. Its digital sum is 19, giving a digital root of 1, and it is not divisible by 3 or 5. The square root of 3646 is approximately 60.37, so it is not a perfect square.
In different numeral systems, 3646 appears as 111000111110 in binary, 7076 in octal, and E3E in hexadecimal.
Contextual notes across mathematics highlight that 3646 is an even semiprime, being the product of two primes,