348078817 has 2 divisors, whose sum is σ = 348078818. Its totient is φ = 348078816.

The previous prime is 348078779. The next prime is 348078821. The reversal of 348078817 is 718870843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191102976 + 156975841 = 13824^2 + 12529^2 .

It is an emirp because it is prime and its reverse (718870843) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348078817 is a prime.

It is not a weakly prime, because it can be changed into another prime (348078877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174039408 + 174039409.

It is an arithmetic number, because the mean of its divisors is an integer number (174039409).

Almost surely, 2^348078817 is an apocalyptic number.

It is an amenable number.

348078817 is a deficient number, since it is larger than the sum of its proper divisors (1).

348078817 is an equidigital number, since it uses as much as digits as its factorization.

348078817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 348078817 is about 18656.8705039189. The cubic root of 348078817 is about 703.4380637875.

The spelling of 348078817 in words is "three hundred forty-eight million, seventy-eight thousand, eight hundred seventeen".