7064221 has 2 divisors, whose sum is σ = 7064222. Its totient is φ = 7064220.

The previous prime is 7064207. The next prime is 7064237. The reversal of 7064221 is 1224607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4040100 + 3024121 = 2010^2 + 1739^2 .

It is a cyclic number.

It is not a de Polignac number, because 7064221 - 2⁹ = 7063709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7064192 and 7064201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7064201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3532110 + 3532111.

It is an arithmetic number, because the mean of its divisors is an integer number (3532111).

Almost surely, 2^7064221 is an apocalyptic number.

It is an amenable number.

7064221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7064221 is an equidigital number, since it uses as much as digits as its factorization.

7064221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7064221 is about 2657.8602295832. The cubic root of 7064221 is about 191.8763400049.

Adding to 7064221 its reverse (1224607), we get a palindrome (8288828).

The spelling of 7064221 in words is "seven million, sixty-four thousand, two hundred twenty-one".