70224709 has 2 divisors, whose sum is σ = 70224710. Its totient is φ = 70224708.

The previous prime is 70224659. The next prime is 70224757. The reversal of 70224709 is 90742207.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57047809 + 13176900 = 7553^2 + 3630^2 .

It is an emirp because it is prime and its reverse (90742207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70224709 - 2⁹ = 70224197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70824709) 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, 35112354 + 35112355.

It is an arithmetic number, because the mean of its divisors is an integer number (35112355).

Almost surely, 2^70224709 is an apocalyptic number.

It is an amenable number.

70224709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70224709 is an equidigital number, since it uses as much as digits as its factorization.

70224709 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 70224709 is about 8380.0184367339. The cubic root of 70224709 is about 412.5690541266.

The spelling of 70224709 in words is "seventy million, two hundred twenty-four thousand, seven hundred nine".