87020887 has 2 divisors, whose sum is σ = 87020888. Its totient is φ = 87020886.

The previous prime is 87020849. The next prime is 87020897. The reversal of 87020887 is 78802078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87020887 - 2¹¹ = 87018839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87020827) 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 as a sum of consecutive naturals, namely, 43510443 + 43510444.

It is an arithmetic number, because the mean of its divisors is an integer number (43510444).

Almost surely, 2^87020887 is an apocalyptic number.

87020887 is a deficient number, since it is larger than the sum of its proper divisors (1).

87020887 is an equidigital number, since it uses as much as digits as its factorization.

87020887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 87020887 is about 9328.4986466205. The cubic root of 87020887 is about 443.1402195970.

The spelling of 87020887 in words is "eighty-seven million, twenty thousand, eight hundred eighty-seven".