868068871 has 2 divisors, whose sum is σ = 868068872. Its totient is φ = 868068870.

The previous prime is 868068779. The next prime is 868068881. The reversal of 868068871 is 178860868.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868068871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868068881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434034435 + 434034436.

It is an arithmetic number, because the mean of its divisors is an integer number (434034436).

Almost surely, 2^868068871 is an apocalyptic number.

868068871 is a deficient number, since it is larger than the sum of its proper divisors (1).

868068871 is an equidigital number, since it uses as much as digits as its factorization.

868068871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The square root of 868068871 is about 29463.0085191584. The cubic root of 868068871 is about 953.9334129974.

The spelling of 868068871 in words is "eight hundred sixty-eight million, sixty-eight thousand, eight hundred seventy-one".