17011987 has 2 divisors, whose sum is σ = 17011988. Its totient is φ = 17011986.

The previous prime is 17011937. The next prime is 17011991. The reversal of 17011987 is 78911071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17011987 - 2¹¹ = 17009939 is a prime.

It is not a weakly prime, because it can be changed into another prime (17011937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8505993 + 8505994.

It is an arithmetic number, because the mean of its divisors is an integer number (8505994).

Almost surely, 2^17011987 is an apocalyptic number.

17011987 is a deficient number, since it is larger than the sum of its proper divisors (1).

17011987 is an equidigital number, since it uses as much as digits as its factorization.

17011987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 17011987 is about 4124.5590067303. The cubic root of 17011987 is about 257.1885800676.

The spelling of 17011987 in words is "seventeen million, eleven thousand, nine hundred eighty-seven".