7224709 has 2 divisors, whose sum is σ = 7224710. Its totient is φ = 7224708.

The previous prime is 7224697. The next prime is 7224743. The reversal of 7224709 is 9074227.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6890625 + 334084 = 2625^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 7224709 - 2⁹ = 7224197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7224109) 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, 3612354 + 3612355.

It is an arithmetic number, because the mean of its divisors is an integer number (3612355).

Almost surely, 2^7224709 is an apocalyptic number.

It is an amenable number.

7224709 is a deficient number, since it is larger than the sum of its proper divisors (1).

7224709 is an equidigital number, since it uses as much as digits as its factorization.

7224709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7224709 is about 2687.8818798452. The cubic root of 7224709 is about 193.3185161719.

The spelling of 7224709 in words is "seven million, two hundred twenty-four thousand, seven hundred nine".