70198813 has 2 divisors, whose sum is σ = 70198814. Its totient is φ = 70198812.

The previous prime is 70198801. The next prime is 70198819. The reversal of 70198813 is 31889107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61748164 + 8450649 = 7858^2 + 2907^2 .

It is an emirp because it is prime and its reverse (31889107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70198813 - 2⁹ = 70198301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70198819) 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, 35099406 + 35099407.

It is an arithmetic number, because the mean of its divisors is an integer number (35099407).

Almost surely, 2^70198813 is an apocalyptic number.

It is an amenable number.

70198813 is a deficient number, since it is larger than the sum of its proper divisors (1).

70198813 is an equidigital number, since it uses as much as digits as its factorization.

70198813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 70198813 is about 8378.4731902656. The cubic root of 70198813 is about 412.5183350283.

The spelling of 70198813 in words is "seventy million, one hundred ninety-eight thousand, eight hundred thirteen".