3040643 has 4 divisors (see below), whose sum is σ = 3061200. Its totient is φ = 3020088.

The previous prime is 3040633. The next prime is 3040649. The reversal of 3040643 is 3460403.

It is a happy number.

3040643 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 cyclic number.

It is not a de Polignac number, because 3040643 - 2⁶ = 3040579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3040649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10055 + ... + 10352.

It is an arithmetic number, because the mean of its divisors is an integer number (765300).

Almost surely, 2^3040643 is an apocalyptic number.

3040643 is a deficient number, since it is larger than the sum of its proper divisors (20557).

3040643 is a wasteful number, since it uses less digits than its factorization.

3040643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20556.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3040643 is about 1743.7439605630. The cubic root of 3040643 is about 144.8733416348.

The spelling of 3040643 in words is "three million, forty thousand, six hundred forty-three".