87004417 has 2 divisors, whose sum is σ = 87004418. Its totient is φ = 87004416.

The previous prime is 87004403. The next prime is 87004451. The reversal of 87004417 is 71440078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79584241 + 7420176 = 8921^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 87004417 - 2⁷ = 87004289 is a prime.

It is not a weakly prime, because it can be changed into another prime (87004717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43502208 + 43502209.

It is an arithmetic number, because the mean of its divisors is an integer number (43502209).

Almost surely, 2^87004417 is an apocalyptic number.

It is an amenable number.

87004417 is a deficient number, since it is larger than the sum of its proper divisors (1).

87004417 is an equidigital number, since it uses as much as digits as its factorization.

87004417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87004417 is about 9327.6158261369. The cubic root of 87004417 is about 443.1122608690.

The spelling of 87004417 in words is "eighty-seven million, four thousand, four hundred seventeen".