6021643 has 4 divisors (see below), whose sum is σ = 6027048. Its totient is φ = 6016240.

The previous prime is 6021641. The next prime is 6021649. The reversal of 6021643 is 3461206.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6021643 - 2¹ = 6021641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6021641) 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, 346 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (1506762).

Almost surely, 2^6021643 is an apocalyptic number.

6021643 is a deficient number, since it is larger than the sum of its proper divisors (5405).

6021643 is a wasteful number, since it uses less digits than its factorization.

6021643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 6021643 is about 2453.9036248394. The cubic root of 6021643 is about 181.9302856613.

Adding to 6021643 its reverse (3461206), we get a palindrome (9482849).

The spelling of 6021643 in words is "six million, twenty-one thousand, six hundred forty-three".