87017617 has 2 divisors, whose sum is σ = 87017618. Its totient is φ = 87017616.

The previous prime is 87017597. The next prime is 87017627. The reversal of 87017617 is 71671078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64016001 + 23001616 = 8001^2 + 4796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87017617 is a prime.

It is not a weakly prime, because it can be changed into another prime (87017627) 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, 43508808 + 43508809.

It is an arithmetic number, because the mean of its divisors is an integer number (43508809).

Almost surely, 2^87017617 is an apocalyptic number.

It is an amenable number.

87017617 is a deficient number, since it is larger than the sum of its proper divisors (1).

87017617 is an equidigital number, since it uses as much as digits as its factorization.

87017617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 87017617 is about 9328.3233756126. The cubic root of 87017617 is about 443.1346688734.

The spelling of 87017617 in words is "eighty-seven million, seventeen thousand, six hundred seventeen".