2189767 has 2 divisors, whose sum is σ = 2189768. Its totient is φ = 2189766.

The previous prime is 2189743. The next prime is 2189783. The reversal of 2189767 is 7679812.

2189767 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 2189767 - 2⁷ = 2189639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189797) 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, 1094883 + 1094884.

It is an arithmetic number, because the mean of its divisors is an integer number (1094884).

2^2189767 is an apocalyptic number.

2189767 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189767 is an equidigital number, since it uses as much as digits as its factorization.

2189767 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 2189767 is about 1479.7861331963. The cubic root of 2189767 is about 129.8571804323.

The spelling of 2189767 in words is "two million, one hundred eighty-nine thousand, seven hundred sixty-seven".