870912017 has 2 divisors, whose sum is σ = 870912018. Its totient is φ = 870912016.

The previous prime is 870911983. The next prime is 870912041. The reversal of 870912017 is 710219078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589712656 + 281199361 = 24284^2 + 16769^2 .

It is a cyclic number.

It is not a de Polignac number, because 870912017 - 2²² = 866717713 is a prime.

It is not a weakly prime, because it can be changed into another prime (870911017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435456008 + 435456009.

It is an arithmetic number, because the mean of its divisors is an integer number (435456009).

Almost surely, 2^870912017 is an apocalyptic number.

It is an amenable number.

870912017 is a deficient number, since it is larger than the sum of its proper divisors (1).

870912017 is an equidigital number, since it uses as much as digits as its factorization.

870912017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 870912017 is about 29511.2184939897. The cubic root of 870912017 is about 954.9737361088.

The spelling of 870912017 in words is "eight hundred seventy million, nine hundred twelve thousand, seventeen".