868536887 has 2 divisors, whose sum is σ = 868536888. Its totient is φ = 868536886.

The previous prime is 868536859. The next prime is 868536899. The reversal of 868536887 is 788635868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868536887 - 2²⁰ = 867488311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868536847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434268443 + 434268444.

It is an arithmetic number, because the mean of its divisors is an integer number (434268444).

Almost surely, 2^868536887 is an apocalyptic number.

868536887 is a deficient number, since it is larger than the sum of its proper divisors (1).

868536887 is an equidigital number, since it uses as much as digits as its factorization.

868536887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The square root of 868536887 is about 29470.9498828932. The cubic root of 868536887 is about 954.1048187096.

The spelling of 868536887 in words is "eight hundred sixty-eight million, five hundred thirty-six thousand, eight hundred eighty-seven".