70038217 has 2 divisors, whose sum is σ = 70038218. Its totient is φ = 70038216.

The previous prime is 70038167. The next prime is 70038229. The reversal of 70038217 is 71283007.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 29855296 = 6339^2 + 5464^2 .

It is an emirp because it is prime and its reverse (71283007) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70038217 is a prime.

It is not a weakly prime, because it can be changed into another prime (70038247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35019108 + 35019109.

It is an arithmetic number, because the mean of its divisors is an integer number (35019109).

Almost surely, 2^70038217 is an apocalyptic number.

It is an amenable number.

70038217 is a deficient number, since it is larger than the sum of its proper divisors (1).

70038217 is an equidigital number, since it uses as much as digits as its factorization.

70038217 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 70038217 is about 8368.8838562857. The cubic root of 70038217 is about 412.2035178407.

The spelling of 70038217 in words is "seventy million, thirty-eight thousand, two hundred seventeen".