6441623 has 4 divisors (see below), whose sum is σ = 6820560. Its totient is φ = 6062688.

The previous prime is 6441607. The next prime is 6441629. The reversal of 6441623 is 3261446.

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 6441623 - 2⁴ = 6441607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6441592 and 6441601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441629) 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, 189443 + ... + 189476.

It is an arithmetic number, because the mean of its divisors is an integer number (1705140).

Almost surely, 2^6441623 is an apocalyptic number.

6441623 is a deficient number, since it is larger than the sum of its proper divisors (378937).

6441623 is a wasteful number, since it uses less digits than its factorization.

6441623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378936.

The product of its digits is 3456, while the sum is 26.

The square root of 6441623 is about 2538.0352637424. The cubic root of 6441623 is about 186.0651773740.

The spelling of 6441623 in words is "six million, four hundred forty-one thousand, six hundred twenty-three".