7220347 has 2 divisors, whose sum is σ = 7220348. Its totient is φ = 7220346.

The previous prime is 7220299. The next prime is 7220371. The reversal of 7220347 is 7430227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7220347 - 2⁷ = 7220219 is a prime.

It is not a weakly prime, because it can be changed into another prime (7220377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610173 + 3610174.

It is an arithmetic number, because the mean of its divisors is an integer number (3610174).

Almost surely, 2^7220347 is an apocalyptic number.

7220347 is a deficient number, since it is larger than the sum of its proper divisors (1).

7220347 is an equidigital number, since it uses as much as digits as its factorization.

7220347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 7220347 is about 2687.0703377470. The cubic root of 7220347 is about 193.2796022570.

The spelling of 7220347 in words is "seven million, two hundred twenty thousand, three hundred forty-seven".