70388317 has 2 divisors, whose sum is σ = 70388318. Its totient is φ = 70388316.

The previous prime is 70388309. The next prime is 70388323. The reversal of 70388317 is 71388307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 12996 = 8389^2 + 114^2 .

It is an emirp because it is prime and its reverse (71388307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70388317 - 2³ = 70388309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70388117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35194158 + 35194159.

It is an arithmetic number, because the mean of its divisors is an integer number (35194159).

Almost surely, 2^70388317 is an apocalyptic number.

It is an amenable number.

70388317 is a deficient number, since it is larger than the sum of its proper divisors (1).

70388317 is an equidigital number, since it uses as much as digits as its factorization.

70388317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 70388317 is about 8389.7745500103. The cubic root of 70388317 is about 412.8892037663.

The spelling of 70388317 in words is "seventy million, three hundred eighty-eight thousand, three hundred seventeen".