6344621 has 4 divisors (see below), whose sum is σ = 6717852. Its totient is φ = 5971392.

The previous prime is 6344617. The next prime is 6344623. The reversal of 6344621 is 1264436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5354596 + 990025 = 2314^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 6344621 - 2² = 6344617 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6344623) 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, 186590 + ... + 186623.

It is an arithmetic number, because the mean of its divisors is an integer number (1679463).

Almost surely, 2^6344621 is an apocalyptic number.

It is an amenable number.

6344621 is a deficient number, since it is larger than the sum of its proper divisors (373231).

6344621 is a wasteful number, since it uses less digits than its factorization.

6344621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373230.

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

The square root of 6344621 is about 2518.8531120333. The cubic root of 6344621 is about 185.1264876403.

The spelling of 6344621 in words is "six million, three hundred forty-four thousand, six hundred twenty-one".