87945863 has 2 divisors, whose sum is σ = 87945864. Its totient is φ = 87945862.

The previous prime is 87945839. The next prime is 87945899. The reversal of 87945863 is 36854978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87945863 - 2⁶ = 87945799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87945833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43972931 + 43972932.

It is an arithmetic number, because the mean of its divisors is an integer number (43972932).

Almost surely, 2^87945863 is an apocalyptic number.

87945863 is a deficient number, since it is larger than the sum of its proper divisors (1).

87945863 is an equidigital number, since it uses as much as digits as its factorization.

87945863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 87945863 is about 9377.9455639282. The cubic root of 87945863 is about 444.7047875773.

The spelling of 87945863 in words is "eighty-seven million, nine hundred forty-five thousand, eight hundred sixty-three".