87000217 has 2 divisors, whose sum is σ = 87000218. Its totient is φ = 87000216.

The previous prime is 87000211. The next prime is 87000233. The reversal of 87000217 is 71200078.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 27154521 = 7736^2 + 5211^2 .

It is a cyclic number.

It is not a de Polignac number, because 87000217 - 2¹⁵ = 86967449 is a prime.

It is equal to p_5053192 and since 87000217 and 5053192 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 87000191 and 87000200.

It is not a weakly prime, because it can be changed into another prime (87000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43500108 + 43500109.

It is an arithmetic number, because the mean of its divisors is an integer number (43500109).

Almost surely, 2^87000217 is an apocalyptic number.

It is an amenable number.

87000217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87000217 is an equidigital number, since it uses as much as digits as its factorization.

87000217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 87000217 is about 9327.3906855026. The cubic root of 87000217 is about 443.1051305742.

The spelling of 87000217 in words is "eighty-seven million, two hundred seventeen", and thus it is an aban number.