70164217 has 2 divisors, whose sum is σ = 70164218. Its totient is φ = 70164216.

The previous prime is 70164203. The next prime is 70164221. The reversal of 70164217 is 71246107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68956416 + 1207801 = 8304^2 + 1099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70164217 is a prime.

It is not a weakly prime, because it can be changed into another prime (70164257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35082108 + 35082109.

It is an arithmetic number, because the mean of its divisors is an integer number (35082109).

Almost surely, 2^70164217 is an apocalyptic number.

It is an amenable number.

70164217 is a deficient number, since it is larger than the sum of its proper divisors (1).

70164217 is an equidigital number, since it uses as much as digits as its factorization.

70164217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 70164217 is about 8376.4083591955. The cubic root of 70164217 is about 412.4505569144.

The spelling of 70164217 in words is "seventy million, one hundred sixty-four thousand, two hundred seventeen".