868560863 has 2 divisors, whose sum is σ = 868560864. Its totient is φ = 868560862.

The previous prime is 868560853. The next prime is 868560877. The reversal of 868560863 is 368065868.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868560863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868560853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434280431 + 434280432.

It is an arithmetic number, because the mean of its divisors is an integer number (434280432).

Almost surely, 2^868560863 is an apocalyptic number.

868560863 is a deficient number, since it is larger than the sum of its proper divisors (1).

868560863 is an equidigital number, since it uses as much as digits as its factorization.

868560863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 868560863 is about 29471.3566535373. The cubic root of 868560863 is about 954.1135979977.

The spelling of 868560863 in words is "eight hundred sixty-eight million, five hundred sixty thousand, eight hundred sixty-three".