3648443 has 4 divisors (see below), whose sum is σ = 3654120. Its totient is φ = 3642768.

The previous prime is 3648439. The next prime is 3648451. The reversal of 3648443 is 3448463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3648443 - 2² = 3648439 is a prime.

It is a super-2 number, since 2×3648443² = 26622272648498, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (3648413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730 + ... + 3207.

It is an arithmetic number, because the mean of its divisors is an integer number (913530).

Almost surely, 2^3648443 is an apocalyptic number.

3648443 is a deficient number, since it is larger than the sum of its proper divisors (5677).

3648443 is an equidigital number, since it uses as much as digits as its factorization.

3648443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676.

The product of its digits is 27648, while the sum is 32.

The square root of 3648443 is about 1910.0897884655. The cubic root of 3648443 is about 153.9462763073.

The spelling of 3648443 in words is "three million, six hundred forty-eight thousand, four hundred forty-three".