3006643 has 4 divisors (see below), whose sum is σ = 3018600. Its totient is φ = 2994688.

The previous prime is 3006631. The next prime is 3006649. The reversal of 3006643 is 3466003.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3006643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3006649) 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, 5593 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (754650).

Almost surely, 2^3006643 is an apocalyptic number.

3006643 is a deficient number, since it is larger than the sum of its proper divisors (11957).

3006643 is a wasteful number, since it uses less digits than its factorization.

3006643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11956.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 3006643 is about 1733.9674160722. The cubic root of 3006643 is about 144.3313325956.

The spelling of 3006643 in words is "three million, six thousand, six hundred forty-three".