2116987 has 2 divisors, whose sum is σ = 2116988. Its totient is φ = 2116986.

The previous prime is 2116981. The next prime is 2116991. The reversal of 2116987 is 7896112.

It is a happy number.

2116987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116987 - 2¹⁵ = 2084219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058493 + 1058494.

It is an arithmetic number, because the mean of its divisors is an integer number (1058494).

2^2116987 is an apocalyptic number.

2116987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116987 is an equidigital number, since it uses as much as digits as its factorization.

2116987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 2116987 is about 1454.9869415222. The cubic root of 2116987 is about 128.4022785024.

The spelling of 2116987 in words is "two million, one hundred sixteen thousand, nine hundred eighty-seven".