868564147 has 16 divisors (see below), whose sum is σ = 964314720. Its totient is φ = 775699200.

The previous prime is 868564141. The next prime is 868564163. The reversal of 868564147 is 741465868.

It is a cyclic number.

It is not a de Polignac number, because 868564147 - 2²³ = 860175539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 868564147.

It is not an unprimeable number, because it can be changed into a prime (868564141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213997 + ... + 218017.

It is an arithmetic number, because the mean of its divisors is an integer number (60269670).

Almost surely, 2^868564147 is an apocalyptic number.

868564147 is a deficient number, since it is larger than the sum of its proper divisors (95750573).

868564147 is a wasteful number, since it uses less digits than its factorization.

868564147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374.

The product of its digits is 1290240, while the sum is 49.

The square root of 868564147 is about 29471.4123685988. The cubic root of 868564147 is about 954.1148004869.

The spelling of 868564147 in words is "eight hundred sixty-eight million, five hundred sixty-four thousand, one hundred forty-seven".