7346221 has 2 divisors, whose sum is σ = 7346222. Its totient is φ = 7346220.

The previous prime is 7346219. The next prime is 7346231. The reversal of 7346221 is 1226437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 741321 = 2570^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 7346221 - 2¹ = 7346219 is a prime.

Together with 7346219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7346201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3673110 + 3673111.

It is an arithmetic number, because the mean of its divisors is an integer number (3673111).

Almost surely, 2^7346221 is an apocalyptic number.

It is an amenable number.

7346221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7346221 is an equidigital number, since it uses as much as digits as its factorization.

7346221 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 7346221 is about 2710.3913001631. The cubic root of 7346221 is about 194.3963008125.

The spelling of 7346221 in words is "seven million, three hundred forty-six thousand, two hundred twenty-one".