2190887 has 2 divisors, whose sum is σ = 2190888. Its totient is φ = 2190886.

The previous prime is 2190857. The next prime is 2190901. The reversal of 2190887 is 7880912.

It is a happy number.

2190887 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 2190887 - 2⁶ = 2190823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190817) 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, 1095443 + 1095444.

It is an arithmetic number, because the mean of its divisors is an integer number (1095444).

2^2190887 is an apocalyptic number.

2190887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190887 is an equidigital number, since it uses as much as digits as its factorization.

2190887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2190887 is about 1480.1645178831. The cubic root of 2190887 is about 129.8793160070.

The spelling of 2190887 in words is "two million, one hundred ninety thousand, eight hundred eighty-seven".