70217117 has 2 divisors, whose sum is σ = 70217118. Its totient is φ = 70217116.

The previous prime is 70217099. The next prime is 70217143. The reversal of 70217117 is 71171207.

It is an a-pointer prime, because the next prime (70217143) can be obtained adding 70217117 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53085796 + 17131321 = 7286^2 + 4139^2 .

It is a cyclic number.

It is not a de Polignac number, because 70217117 - 2⁶ = 70217053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70217177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108558 + 35108559.

It is an arithmetic number, because the mean of its divisors is an integer number (35108559).

Almost surely, 2^70217117 is an apocalyptic number.

It is an amenable number.

70217117 is a deficient number, since it is larger than the sum of its proper divisors (1).

70217117 is an equidigital number, since it uses as much as digits as its factorization.

70217117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 686, while the sum is 26.

The square root of 70217117 is about 8379.5654421933. The cubic root of 70217117 is about 412.5541859642.

The spelling of 70217117 in words is "seventy million, two hundred seventeen thousand, one hundred seventeen".