870710917 has 2 divisors, whose sum is σ = 870710918. Its totient is φ = 870710916.

The previous prime is 870710837. The next prime is 870710921. The reversal of 870710917 is 719017078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 866654721 + 4056196 = 29439^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 870710917 - 2¹¹ = 870708869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 870710917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870710117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435355458 + 435355459.

It is an arithmetic number, because the mean of its divisors is an integer number (435355459).

Almost surely, 2^870710917 is an apocalyptic number.

It is an amenable number.

870710917 is a deficient number, since it is larger than the sum of its proper divisors (1).

870710917 is an equidigital number, since it uses as much as digits as its factorization.

870710917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 40.

The square root of 870710917 is about 29507.8111184141. The cubic root of 870710917 is about 954.9002269605.

The spelling of 870710917 in words is "eight hundred seventy million, seven hundred ten thousand, nine hundred seventeen".