2167987 has 2 divisors, whose sum is σ = 2167988. Its totient is φ = 2167986.

The previous prime is 2167973. The next prime is 2167999. The reversal of 2167987 is 7897612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2167987 - 2¹⁵ = 2135219 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2167937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083993 + 1083994.

It is an arithmetic number, because the mean of its divisors is an integer number (1083994).

2^2167987 is an apocalyptic number.

2167987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167987 is an equidigital number, since it uses as much as digits as its factorization.

2167987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 2167987 is about 1472.4085710155. The cubic root of 2167987 is about 129.4252138469.

The spelling of 2167987 in words is "two million, one hundred sixty-seven thousand, nine hundred eighty-seven".