8645887 has 2 divisors, whose sum is σ = 8645888. Its totient is φ = 8645886.

The previous prime is 8645863. The next prime is 8645899. The reversal of 8645887 is 7885468.

8645887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8645887 - 2⁷ = 8645759 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8645587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322943 + 4322944.

It is an arithmetic number, because the mean of its divisors is an integer number (4322944).

Almost surely, 2^8645887 is an apocalyptic number.

8645887 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645887 is an equidigital number, since it uses as much as digits as its factorization.

8645887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 46.

The square root of 8645887 is about 2940.3889198540. The cubic root of 8645887 is about 205.2437077813.

The spelling of 8645887 in words is "eight million, six hundred forty-five thousand, eight hundred eighty-seven".