87030217 has 2 divisors, whose sum is σ = 87030218. Its totient is φ = 87030216.

The previous prime is 87030199. The next prime is 87030221. The reversal of 87030217 is 71203078.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67502656 + 19527561 = 8216^2 + 4419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87030217 is a prime.

It is not a weakly prime, because it can be changed into another prime (87030017) 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, 43515108 + 43515109.

It is an arithmetic number, because the mean of its divisors is an integer number (43515109).

Almost surely, 2^87030217 is an apocalyptic number.

It is an amenable number.

87030217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87030217 is an equidigital number, since it uses as much as digits as its factorization.

87030217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 87030217 is about 9328.9987136884. The cubic root of 87030217 is about 443.1560562183.

The spelling of 87030217 in words is "eighty-seven million, thirty thousand, two hundred seventeen".