6221641 has 4 divisors (see below), whose sum is σ = 6230800. Its totient is φ = 6212484.

The previous prime is 6221639. The next prime is 6221647. The reversal of 6221641 is 1461226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6221641 - 2¹ = 6221639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6221647) 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, 3471 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (1557700).

Almost surely, 2^6221641 is an apocalyptic number.

It is an amenable number.

6221641 is a deficient number, since it is larger than the sum of its proper divisors (9159).

6221641 is an equidigital number, since it uses as much as digits as its factorization.

6221641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158.

The product of its digits is 576, while the sum is 22.

The square root of 6221641 is about 2494.3217514988. The cubic root of 6221641 is about 183.9225512898.

Adding to 6221641 its reverse (1461226), we get a palindrome (7682867).

The spelling of 6221641 in words is "six million, two hundred twenty-one thousand, six hundred forty-one".