3005641 has 4 divisors (see below), whose sum is σ = 3010000. Its totient is φ = 3001284.

The previous prime is 3005633. The next prime is 3005671. The reversal of 3005641 is 1465003.

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: 1465003 = 577 ⋅2539.

It is a cyclic number.

It is not a de Polignac number, because 3005641 - 2³ = 3005633 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3005671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891 + ... + 2608.

It is an arithmetic number, because the mean of its divisors is an integer number (752500).

Almost surely, 2^3005641 is an apocalyptic number.

It is an amenable number.

3005641 is a deficient number, since it is larger than the sum of its proper divisors (4359).

3005641 is an equidigital number, since it uses as much as digits as its factorization.

3005641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3005641 is about 1733.6784592305. The cubic root of 3005641 is about 144.3152974291.

The spelling of 3005641 in words is "three million, five thousand, six hundred forty-one".