2017987 has 2 divisors, whose sum is σ = 2017988. Its totient is φ = 2017986.

The previous prime is 2017963. The next prime is 2017991. The reversal of 2017987 is 7897102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2017987 - 2¹⁵ = 1985219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2017957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008993 + 1008994.

It is an arithmetic number, because the mean of its divisors is an integer number (1008994).

2^2017987 is an apocalyptic number.

2017987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2017987 is an equidigital number, since it uses as much as digits as its factorization.

2017987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2017987 is about 1420.5586929092. The cubic root of 2017987 is about 126.3686816536.

The spelling of 2017987 in words is "two million, seventeen thousand, nine hundred eighty-seven".