70217197 has 2 divisors, whose sum is σ = 70217198. Its totient is φ = 70217196.

The previous prime is 70217177. The next prime is 70217221. The reversal of 70217197 is 79171207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55860676 + 14356521 = 7474^2 + 3789^2 .

It is an emirp because it is prime and its reverse (79171207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70217197 - 2²³ = 61828589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70217117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108598 + 35108599.

It is an arithmetic number, because the mean of its divisors is an integer number (35108599).

Almost surely, 2^70217197 is an apocalyptic number.

It is an amenable number.

70217197 is a deficient number, since it is larger than the sum of its proper divisors (1).

70217197 is an equidigital number, since it uses as much as digits as its factorization.

70217197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174, while the sum is 34.

The square root of 70217197 is about 8379.5702157092. The cubic root of 70217197 is about 412.5543426416.

The spelling of 70217197 in words is "seventy million, two hundred seventeen thousand, one hundred ninety-seven".