7223641 has 2 divisors, whose sum is σ = 7223642. Its totient is φ = 7223640.

The previous prime is 7223627. The next prime is 7223647. The reversal of 7223641 is 1463227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 2876416 = 2085^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 7223641 - 2⁵ = 7223609 is a prime.

It is not a weakly prime, because it can be changed into another prime (7223647) 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 as a sum of consecutive naturals, namely, 3611820 + 3611821.

It is an arithmetic number, because the mean of its divisors is an integer number (3611821).

Almost surely, 2^7223641 is an apocalyptic number.

It is an amenable number.

7223641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7223641 is an equidigital number, since it uses as much as digits as its factorization.

7223641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 7223641 is about 2687.6832030580. The cubic root of 7223641 is about 193.3089898666.

Adding to 7223641 its reverse (1463227), we get a palindrome (8686868).

The spelling of 7223641 in words is "seven million, two hundred twenty-three thousand, six hundred forty-one".