869768017 has 2 divisors, whose sum is σ = 869768018. Its totient is φ = 869768016.

The previous prime is 869767993. The next prime is 869768021. The reversal of 869768017 is 710867968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784224016 + 85544001 = 28004^2 + 9249^2 .

It is a cyclic number.

It is not a de Polignac number, because 869768017 - 2¹¹ = 869765969 is a prime.

It is a super-3 number, since 3×869768017³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (869768027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434884008 + 434884009.

It is an arithmetic number, because the mean of its divisors is an integer number (434884009).

Almost surely, 2^869768017 is an apocalyptic number.

It is an amenable number.

869768017 is a deficient number, since it is larger than the sum of its proper divisors (1).

869768017 is an equidigital number, since it uses as much as digits as its factorization.

869768017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 869768017 is about 29491.8296651802. The cubic root of 869768017 is about 954.5554126981. Note that the first 3 decimals are identical.

The spelling of 869768017 in words is "eight hundred sixty-nine million, seven hundred sixty-eight thousand, seventeen".